Cameracraft magazine – Taking your practical photography further

Tag: Alpha

Sony A7RVI and 100-400mm f/4.5 GM lens
- 66.7 megapixel back illuminated partially stacked full frame sensor
- Bionz XRII processor with AI subject recognition and tracking over 94% of the frame
- 3X brighter OLED viewfinder with better than sRGB colour
- New battery for 15% more stamina
- Dual SDII/CFExpress Type A card slots
- Illuminated buttons for low light operation
- 8.5 stops sensor-based image stabilisation
- New 100-400mm constant f/4.5 optically stabilised zoom with 3X faster AF
- £4,400 launch price already on pre-order from dealers such as Clifton Cameras and WEX
Sony’s new A7RVI hit the news desk – though the UK company no longer appears to issue press information and relies on a website little different from anything they provide for dealers – on the same day we ordered a replacement deep eyecup for our A7RV. Evening sunshine had made the otherwise superb EVF hard to see, and the silicon surround of the original eye-pad had split at one corner.

Sony doesn’t make a deeper eyecup but others such as JJC and Smallrig do, alongside regular replacements. But for those buying the A7RVI in June, its EVF has a boost to make it three times as bright as the V, while the otherwise similar near-10-million dot OLED gets better than sRGB colour and increased dynamic range.

If you do not need the other improvements such as 30fps blackout-free continuous shooting, up to 5 seconds of pre-capture frames, four times faster readout from the new stacked 66.7 megapixel sensor greatly reducing silent shutter action/pan distortion and video rolling, the EVF enhancement might well be your main reason to upgrade to this £4,400 body.

It also has a new mode dial with 1-2-* instead of 1-2-3 for Memory recall of complete setups – the * opens rapid access to many saved setups previously needing menu diving. And when you need buttons, there’s another button to light them. Give me one which instantly puts on my reading specs and it would have more use!

The additional pixels in the image are of little importance. Mark Galer (one of the better ambassador/influencers) states repeatedly in his blog post that it’s ‘twice the resolution’ of the A7V. Well, 66MP is not twice the resolution of 33MP because resolution is and always has been a linear not area measurement. It’s actually 1.41X the resolution, twice the megapixels.

The increase from 9504 x 6336 pixels to 9984 x 6656 is not insignificant but not game-changing. For astro and wildlife or any kind of tele photography where the pixels capturing a subject with a specific lens are what counts, the OM-Systems 20MP MicroFourThirds sensor is like a crop from an 80MP full frame, Fujifilm’s X-Trans 40MP matches 94MP on the same basis. The APS-C crop on the A7RVI is 28MP, compared to 26MP on the V.

Relative to the A7RIV/V the VI has a 5% increase in resolution and does become the highest resolution 24 x 36mm sensor camera, and to this Sony add marginally better in-body stabilisation, improved dynamic range to 16 stops depending on capture format and hopefully some improvements to noise levels across the entire low to high ISO range.

As with other recent R series models having no low pass filter, the A7RVI offers 4-shot (true RGB for every pixel) or 16-shot (2X pixel dimensions) multi-shot high resolution. There is no upgrade to in-camera processing (as used by OM-Systems) and it’s a strictly static subject tripod mounted option. This isn’t surprising as creating a 240MP image from 16 70MB raw captures demands much more than OM’s 50 or 80MP generated from 16 20MB raws.

Extending the AF point grid to cover 94% of the full frame as feasible will help deal with lenses that have curvature of focus field when used for action photography with a subject relatively small in the frame.

Sony’s colour has always been good but Auto White Balance far too variable. The Bionz XR2 processor (introduced with the A7V) adds AI-derived image analysis which can give much more consistent skin tones in changing light and settings. It’s a something wedding, portrait and fashion/lifestyle photographers need.

A new XLR digital microphone module with four channels has also been announced, fitting the multi function accessory shoe as for previous mics and preamps. The second USB C socket has a screw thread beside it to accept new lockable cables without needing a clunky tether-anchor assembly.

Battery with more ammo

The one change most likely to frustrate existing owners of A7*III and later bodies, including even A9III, is that a new larger battery priced at £99/$120 is used to solve the problem of the poor performance of the NP-FZ100 with its 2280maH rating. The NP-SA100 (already listed by dealers – see Clifton Cameras) offers 2670maH at the same nominal 7.2V with an expectation of 600 shots. While Sony has never attempted to improve the FZ100 third parties like Mathorn (sold by WEX) offer 2600maH already and it might have been reasonable to think Sony could have improved their now ageing battery to at least this spec without having to change to a brand new shape and fitting.

Here’s an interesting 2600maH third party – Llano brand from Amazon with a neat power level display which lights up at a touch. It is not biometric as they claim, just plain old touch-sensitive inductance. But it’s half the price of some third party cells.

However, if the NP-SA100 battery after moderate use doesn’t do the now familiar FZ100 trick of showing over 30% charge in the finder display then dying completely after half an hour taking just a couple of dozen frames, it may save newcomers to the system experiencing an urgent need to buy two more.

Twin USB 3 connections do make it possible to chargenot only while shooting, but also while using a tethered display or video SSD recorder. Power banks work well – here’s a very good Ugreen deal which is also a magnetic wireless charger for iPhone. There is also a new battery grip accepting the usual two to double everyday stamina, £399 on pre-order.

The one full size sample image (above, click for link) provided by Sony on the press site is shot at ISO 400 and is fairly noisy as well as not ultimately sharp – no doubt there will be many more which prove the A7RVI can at least match the V if not all rival brands or models using sensors in the 40-50MP range.

100-400mm f/4.5 GM OSS

Alongside the A7RVI Sony have launched an alternative to existing long tele zooms, a new 100-400mm f/4.5 constant aperture GM OSS. The existing GM OSS is 100-400mm f/4.5-5.6, weighs 1395g, is 205mm long and focuses down to just 98cm with a subject scale of 0.35X, takes 77mm filters and costs £2,149. The new model claims 3X faster AF and better optical performance as well as 2/3rds of a stop extra light on to the sensor at 400mm.

It is however over twice the price at £4,400 and weighs 1840g, is 328mm long (this is a huge difference) taking 95mm filters though with a rear slot-in option, and its minimum focusing distance is variable from 64cm to 1.5m with a maximum image scale of 0.25X. You can buy two or even three Sony G long tele zooms for the price but not one them will give 400mm and f/4.5 – you can get the 400mm f/2.8 for over ten grand, or use a 2X converter on the 70-200mm f/2.8 and get f/5.6. So there’s a definite place for this lens.

Pre-order now open from most dealers including WEX and Clifton.
May 16, 2026
Sony E 70-350mm f/4.5-6.3 G OSS
The neatest solution for sharp long tele shots on Sony A6000 series APS-C
- Excellent full aperture performance from 70 to 350mm
- OSS stabilisation works with every Sony Alpha E-mount APS-C body
- Perfect for movies with A6000, A6300, A6400 without sensor stabilisation
- Compatible with all NEX and Alpha E-mount models from 2010 on
- Enhanced OSS with A6500, A6600
- Compact and light weight
- G series optical quality, Custom Button on lens, AF/MF and OSS switches on lens
- Lens lock at 70mm to prevent zoom creep
- Single extending zoom barrel
- 67mm non-rotating filter thread
- Bayonet lens hood included
- Moisture and dirt resistant multicoating
- Coverage allows use on full frame bodies with larger than APS-C crop
This lens was purchased in October 2019 and the review is based on nine months of use on Sony A6500 (ILCE-6500), A6300 (ILCE-6300), A6000 (ILCE-6000) and A7R MkIII (ILCE-7M3). Review by David Kilpatrick.

A solution for practical photography out and about – worldwide

I had been using the Sony FE 70-300mm f/4.5-5.6 G OSS full frame tele zoom on my A7RIII for over a year. This lens is very sharp wide open and benefits from the best close focusing in its class at 90cm meaning a scale of 0.31X at 300mm. It weighs 854g and has a double tube zoom extension. As you can see above this lens (left) is only a few mm longer physically than the APS-C 70-350mm (right) but the extra barrel heft, 72mm filters and much larger lens hood meant it needed a bigger kit bag, and proved harder to change quickly when swapping lenses.

The 70-350mm for the smaller image sensor proved if anything even sharper, right to 350mm. Lenses like this often prove soft at maximum focal length and maximum aperture. The 70-300mm at f/5.6 is a third of a stop faster, but to get it as crisp as its newer little brother, it needs to be set f/6.3 – a match in speed. You can see above how much bigger the full frame lens becomes at 300mm. The 70-350mm only weighs 625g but its very fast and silent XD Linear Motor AF can only get as close as 1.5m at 350mm, 1.1m at 70mm. The maximum subject scale is 0.25X.

I knew the 70-350mm would be my choice for travel and daily use with my A6500, but I was going to miss that closer focus. The full frame lens has an AF range limiter, full range or 3m to infinity but oddly no 0.9m to 3m choice. The APS-C lens has no limiter but I have never missed it and rarely used it on the 70-300mm.

My big question was – can I do without the 70-300mm and use the 70-350mm on my full frame bodies?

Cropping power, sensor resolution and coverage

Tests quickly proved that distortion and vignetting kick in fast beyond the crop format field of view, but sharpness remains good and depending on focal and aperture you get much more than APS-C. You can almost get a full frame at close range.

This mushroom (about hand sized) is at 350mm and f/11 on the A7RIII, and you can see the mechanical vignetting cut-off left and right. It’s caused by the lens rear baffle not the optical design – the lens could be modified to remove this, but it’s not advised.

At 70mm on a very demanding subject the distortion without lens profile, on full frame, is extreme (left) but with Lens Profile correction applied at 200% plus -8 Manual, and similar vignetting adjustment, Adobe Camera Raw or Lightroom can almost handle it. On a neutral subject like a portrait with a foliage background the coverage would be fine. More to the point, manual crops much larger than the 16 x 24mm you could expect from an APS-C lens are fully usable.

But why use a full frame body? Unless you own a Sony A7RIV (61 megapixels) you won’t actually get a more detailed distant animal or bird. The modest 24 megapixels of all the current APS-C bodies beats the 18 megapixel crop format of the A7RII/III. Canon users have much the same position, their smaller APS-C (1.6X not 1.5X) and 28 megapixel resolution matches 60 megapixels on 24 x 36mm. The advantage of full frame is that you may catch more of your subject, your framing and tracking active subjects enjoy more leeway. If your subject stays in position the smaller sensor can capture finer detail – and this is where the 70-350mm excels.

This is a good example. At 198mm on the 70-350mm on A6500, it’s the same composition I would have had with the A7RIII and 70-300mm at 300mm and that would have produced a larger more detailed image. There’s only a real benefit to the 70-350mm on APS-C when you’re near the 350mm end. Did I keep both? No – I already knew I wanted a much faster but still compact zoom for the full frame kit, and the Tamron 70-180mm f/2.8 was coming in six months’ time. So I sold the 70-300mm and decided to use the A6500 with 70-350mm for all longer tele shooting.

From the start it proved a very capable combination.

Fast lenses are not as important now

Mirrorless cameras with phase detection autofocus, good high iSO performance and better resolution electronic viewfinders have made wide aperture lenses less essential for low light. The linear motor focus of the 70-350mm rarely misses a shot regardless of conditions. One of my first shoots was a music festival, where this lens allowed me to work from the very back of the hall and never get in the way of the audience.

Processed from a raw file at ISO 6400, this shot of Steve Byrne performing was taken at 350mm wide open at f/6.3. The same on full frame would need a 525mm lens at f/8 and ISO 8000 (a direction Canon is taking with their new 800mm f/11 IS STM for the R mount – the working aperture no longer matters much if the viewfinder stays bright, AF is accurate and there’s not much noise at high ISO settings).

The long reach in a concert hall is one side of using a 350mm on APS-C. Here’s another – the lens may only achieve a quarter life size and need you to be 1.5m away at 350mm, but 0.25X on a 1.5X factor sensor is 0.375X in ‘old macro’ terms. Not only that, the ISO 2500 used here is about the same in grain or noise terms as an ISO 400 film and the stabilisation of this lens on the A6500 is as good as you get. A 1/125s shutter speed did not prevent tiny hairs on the caterpillar’s head being sharply resolved.

This lens is far better than the 18-200, 18-300, 18-400 or 16-300mm I’ve used on a variety of DSLRs for long APS-C reach. It’s free from the residual aberration which demands you ‘stop down one’ to clean up the long end image. Combined with Sony’s PDAF it handles a concert or low indoor light as well as an ƒ2.8-4 on a conventional DSLR.

Compare this with a 100-400mm for the same format

For the sake of 50mm at the long end – a difference of only 12.5% in image scale – the excellent Fujifilm Fujinon XF 100-400mm f/4.5-5.6 R LM also gives a half to a third of a stop more light transmission in its longer range. But look at the cost! It is twice the price and weight, and you can see the size. Gains – a near-apochromatic performance, matched 1.4X and 2X converters available (not an option for the Sony and never likely to be). Losses – only 0.19X close-up scale. It’s remarkable how much difference there is in the physical aspect of these two lenses. I have used both and in practice they are equally sharp on 24 megapixels.

The Sony 100-400mm and Sigma 100-400mm are both full frame lenses and much larger. The 70-350mm is unique as far I can tell, no-one else has a lens like it. It also answers one of the major criticisms of the original E-mount APS-C system, the lack of any lens longer than 210mm and that only in a 55-210mm design best described as consumer grade. I’ve actually found it pretty good for the money – but it’s not much money!

Sony 70-350mm G OSS image gallery

Rather than write much more, I’ll leave you with this gallery. I have reduced the file size but where you see an enlarged section clip along with the full frame – well, you can judge for yourself.
Sony 70-350mm G OSS verdict

If you own any of the APS-C Sony bodies, from the NEX-3 and 5 of 2010 onwards, this lens will not disappoint you. The effective OSS image stabilisation means that even if you prefer to compose and shot using the rear screen and hold the camera away from your body you’ll get sharp stills and steady movies. It’s a big step up from the 55-210mm and much more affordable than, say, a 70-200mm f/4 G with 1.4X or 2X converter.

You may have to control colour fringes in some strong backlight situations with blur when working from raw files, as it’s not an apochromat just a regular very good tele zoom. However the resolution reflects advances in design over the last decade. It’s also a very handsome looking black lens with its silver G logo and designation contrasting with white markings. It feels robust and the zoom and manual focus (when needed) are smooth. The metal bayonet is a tight precise fit on my A6500 and A7RIII, a little less so on my A6000 with its older four-screw type body mount.

I can carry this lens all day without even realising it’s there, round neck or shoulder – and there are not many lenses covering this range you would want to hang on a strap round your neck.

You can support my reviews if you check these links for availability and price:
Amazon UK – didn’t have any stock at all at the time of writing – https://amzn.to/30ZC4Ck
Park Cameras UK – https://tidd.ly/3jLHbP7
WEX UK – https://tidd.ly/3hKRhhA
B&H USA and Worldwide – https://tinyurl.com/y6cguvpo
July 28, 2020
Larmor 5th Generation glass screen protector with Sunshade

We’ve fitted GGS or similar toughened laminated glass screen protectors to our Sony bodies ever since way back in 2011, we were the first Alpha web resource to publish information about NEX screen delamination and how to repair a deteriorated LCD using one of these great products.

Replacing NEX LCD Cover Glass

Of course it wasn’t a cover glass, just a plastic surface layer. But if you fit a GGS, Larmor or similar ultrathin glass protector the moment you get your new Sony Alpha body (whether mirrorless or SLT, compact or bridge) you don’t need to mess with the original, risk your warranty, or risk anything at all. The new Generation 5 Larmor has a silicon adhesive which clings instantly, bubble-free, yet peels off safely using just a fingernail under a corner. It permits all touch screen operations, all screen folding including A99/77 and RX10 series reverse foldaway, and for around £10/$15 is an essential for your new camera.

Now there’s a new version which comes with a magnetic black surround and accepts a folding screen shade which just pops on to this. We paid £15.95 from ukhighland photographic on eBay, post free, VAT receipt given.

(more…)

October 30, 2018
Sony A7RII versus Nikon D850 – noise
There’s a lot of noise about the Nikon D850 right now but few direct comparisons. One problem I have with some early reports is that new D850 owners are most likely to be existing D810 or perhaps D750 or D5 owners. Any comparisons are therefore being made with earlier Nikon sensors.

Recently a Nikon ambassador whom I respect greatly placed some .NEF raw files into a Dropbox for fellow professionals to examine. Since this article effectively criticises Nikon, I will not reproduce anything recognisable. I naturally grabbed the files and processed them with my usual care in Adobe Camera Raw. This includes making adjustments to the Sharpness and Noise Reduction settings depending on the ISO used. My standard with Sony, Nikon and most other files is to reduce the radius for sharpening to the minimum (0.5) leaving the basic settings of 25 for sharpness and 25 for detail untouched, with no masking. I also don’t touch the Colour Noise controls at all, and usually only adjust the first Luminance control leaving Luminance Contrast and Luminance Detail at default. This first Luminance control tends to set to zero for ISO 100 (or the minimum for a given camera), 10 to 15 around 400 to 800, 25 at 1000 to 2000, 30 to 35 at 2500 to 4000, 50 at 6400 and never above this level.

In practice these settings make raw files from the Sony A7RII (and presumably A99II, which I do not own) fully useful to ISO 3200 regardless of conditions and intent. Blue skies do not have grain, shadows are smooth and clean, detail is fine, skin tones are not marred by noise. ISO 6400 is slightly grainy but only to the degree we used to expect from ISO 800 in cameras of the first CMOS period (2007-2008, the A700 and A900).

So, given the glowing reports on the new Nikon sensor, I was expecting to see something at least matching the A7RII. There’s not a huge difference between 45 megapixels (Nikon) and the earlier 42 megapixel Sony BSI CMOS. I have already seen that the Canon 51 megapixel sensor in the 5DS/R offers no benefit at all, just a steep fall-off in shadow detail and loss of dynamic range combined with more noise.

Here, then, is a 100% section from a raw .NEF at ISO 1000 on the D850, with the Adobe Camera Raw settings I would expect to turn in a clean result. It has been saved at JPEG 12 but WordPress’s image engine causes some quality loss:

The NR was set as described above, to Luminance 25.

Then I looked back through my files to locate some ISO 1000 raws from the A7RII and try to find something with broadly comparable tone (surprisingly difficult!). Here is the result, with exactly the same process and settings:

You will note that the grainy noise is much finer. Both are taken from regions away from the image centre where the camera’s firmware will be adding some gain to combat sensor-created vignetting. On-axis areas are slightly less noisy in both cameras. This may also depend on the lens. You probably think this looks noisy for the A7RII, and this light colour and exposure level does indeed tend to increase noise.

Here is another A7RII ISO 1000 clip in better light, brighter subject matter, closer to the frame centre – this is more typical of the noise level you should see (or not see) in Sony 42 megapixel images:

I’ver chosen blurred neutral areas beyond the point of critical focus because these emphasise noise. If the same settings are used with sharply focused detail, with strong colours or contrast and textures, you simply won’t see noise at all at ISO 1000 and NR 25.

I will also say that while the Nikon community seemed impressed by the sharpness of sample images, I was not. I have to reconsider my critical opinions of Sony’s lenses. I have been judging zooms against Carl Zeiss and Voigtländer primes, and used to seeing a level of detail in images at 100% which I guess regular DSLR users simply don’t expect. Part of this is down to the quality of the A7RII sensor, part down to the lenses, and a whole lot is down to the zero-error focusing of the mirrorless system. I am part of another community, where most photographers use Canon or Nikon and prefer to have fast zooms and primes (the usual 16-35mm f/2.8 or 14-24mm f/2.8, 24-70mm f/2.8, 70-200mm f/2.8, 35mm f/1.4, 50mm f/1.4 and 85mm f/1.4 kit). In this group, many are having their cameras and lenses custom matched and reporting improvements in sharpness which transform their autofocus work.

Those who use Sony, Fujifilm, Olympus or Panasonic mirrorless systems don’t tend to make any comment as they have been getting critically sharp focus ever since they made the switch from DSLRs.

Conclusion? My A7RII is now two years old. It’s a 2015 model which is certainly not surpassed by 2017 rivals at least in the ‘core competence’ of its sensor. Other Sony models may offer different levels of special features, like the blistering shooting speed and focus tracking of the A9, but the A7RII continues to do its job as a great all-rounder and this quick comparison shows why.

– David KIlpatrick
- Affiliate link – new and used A7RII at WEX Photographic (UK)
- Affiliate link – A7RII at B&H (USA)
- Affiliate link – Amazon UK http://amzn.to/2xM2smX
To support Photoclubalpha, buy through our Affiliate links… or subscribe to David’s premium-quality photographic bi-monthly Cameracraft which includes regular Sony-related editorial, with system expert Gary Friedman as Associate Editor – see www.iconpublications.com
September 18, 2017
Alpha A9 promises professional performance
You can order the A9 here – any of these links to order will help photoclubalpha pay our way.

B&H have it listed

WEX in the UK (also Calumet)

Amazon (co.uk)

The front view below of the Sony Alpha A9 body, introduced today, gives a subtle clue about changes under the hood. For some time we’ve been nagging Sony about the weak, potentially tilting, 4-screw mount on the mirrorless bodies. Now they have at least added two more screws, to match Fujifilm X or the A-mount, even if the distribution is a bit odd with all the extra strength concentrated at the sides not the top and bottom where heavy lenses normally cause most stress.

It’s a clue to a different internal construction, probably stronger all round, to make it possible to support the new 100-400mm G Master lens, a native E-mount new design which should come as a relief to those struggling with the A-mount 70-400mm varieties on adaptors:

But the lenses still have four-screw mount fitting (as do most A-mount lenses), and fairly weak sacrificial assemblies to prevent damage to the camera if knocked. See this video (it’s a bit long but makes a point): //www.youtube.com/watch?v=qGvlX9BtiTQ

The EVF of the A9 is around twice as bright as the A7RII and also runs at twice the refresh rate, while offering 50% more pixels. Part of this is down to the new stacked-CMOS 24.2 megapixel full frame sensor, which has a readout some twenty times faster than the A7II and previous generation 24 megapixel models. That, of course, is linked to the 6K native live feed from the full frame (used to create very high quality 4K video as well as an excellent live view) which in turn enables a distortion-free purely electronic silent shutter running to 1/32,000s plus 20 frames per second sequence shooting.

AF is claimed to be 25% faster than the A7RII and when the shutter speed is faster than 1/125s there is no visible blackout in the finder when shooting. Personally, a single frame (1/120s or 1/60s) blip would never be unwelcome as it helps tell you when you’ve shot. As for the low-light capability, not too much is being said; it’s in the usual up to 56,200 range with extension of two more stops. (Edit: April 20, we have noticed that at least one ‘reviewer’ – Sony Artisan paid to promote – completely wrongly claims 2,048,000 ISO not the actual 204,800, when comparing the A9 with the Nikon D5’s listed 3,276,800). The high speed sequences, movie frame rate and EVF refresh all tend to limit ultimate low-light clean imaging and we would guess that the A7SII and A7RII will not be made redundant.

That can not be said for the old weeny weedy weaky batteries of the E-mount range. The stripling NP-FW50 used in all the NEX to A7 series models gets kicked aside by a slightly larger variant with 2.2X the capacity. Frankly, it’s overdue but it creates a split system. I’m happy to travel with my A6000, RX10, and A7RII all sharing a pool of batteries even if those do run down alarmingly fast.

If it means carrying a new dual charger too, to get the necessary 2.5 hour recharge time instead of a leisurely overnight in-camera top up, I can only hope the charger (cum mains adaptor with clumsy dummy battery connection) also accepts the older batteries. It’s carrying multiple chargers that increases my travel bag weight not carrying extra batteries.

But… I see that the charger ‘cradle’ can mount four of the new cells, and charge the lot in 480 minutes. This cradle has a dummy battery on a lead, and 1/4″ tripod thread mounting points to add it to a video rig (which this camera is not specially made for, indicating an A9S is on the way with S-Log and direct 4K top quality encoding). The dummy battery then powers the camera for roughly 10X the life of the current A7 series batteries. So what if you have an A7 model? Easy – the outer shell of the battery simply slides off, revealing a SMALLER dummy inside, which fits the entire NEX/A7 mirrorless range or indeed the RX10 series. So your existing Sony mirrorless kit can be powered using this ‘battery bank’.

The top plate reveals that some input has been listen to. As a regular M1-M2-M3 user on my A99, the drop to only two memory registers on the A7RII is unwelcome but survivable. A return to three, plus a a custom button memory recall function, will make the a9 better. Having the drive modes on a physical control is good too. But I’ll leave any verdict on all this until the actual operation is better known – whether, for example, the memory registers now cover more than just the primary camera settings and thus enable one-step tripod setup.

I’ll have to say that after using the Olympus OM-D E-M1 MkII, which offers many of the advantages being claimed by the A9 as major selling points, the non-reversible simple tilt rear screen remains a negative compared to a fully articulated reversible screen. Sony does now offer a real glass protector, but I like the A55 to A99 style screen which can be turned to face the wall permanently if you want (and has never arrived on the E-mount models).

The new joystick controller takes something from the A99/II controls and adds it to the wheel of the A7 series, while the upper thumb button becomes a native back-button AF. In addition to being able to move the focus points faster (it’s a pain with the A7RII design) there is a memory for AF point selection and a horizontal-vertical switch function. Combined with a larger number of AF points covering 93% of the sensor, the action/sports performance of the A9 should be a long way ahead of any earlier mirrorless (though the A6500 is pretty good).

Though not visible here, there are two SDXC (one UHS-II) card slots with the usual recording options similar to the A99/II, and also an Ethernet port which is almost a requirement for some major sports events. You will notice that the Drive control has a Focus control below it, giving direct access to the kind of AF/MF/DMF choices found on the dedicated controller of A-mount bodies – no more need for menu or Function/Custom button operations.

The eyepiece, shown here, may perhaps be a little less prone to detachment and we are promised the least squiffy finder view with new optics.

There is one minor fly in the ointment, a price-tag of £4,500 (UK) body only; the 100-400mm will be £2,500. While the team of assembled ambassadors made much of praising the silent shutter mode and small size of the camera at Sony’s vidcast press conference, none of this is new and pretty much anything the A9 can do is also within the reach of the A7RII and A7SII even if it does it faster and perhaps better. There was some praise for the durability of the system – what? I don’t know about others, but I find the Sony/Zeiss lenses are the worst I’ve ever owned for showing almost immediate signs of wear from the lightest contact with clothing and bags. Silver appears through the molecule-thin black coating instantly and neither the regular lenses nor the bodies have ever struck me as being suitable to knock around in a busy press kit or travel bag. Where old Leicas survived years of abuse elegantly, gradually brassing at the edges, my Sony kit generally just looks a bit scruffy and used despite minimal handling. The A9 looks about the same in this respect as the mark II lesser models.

Full official press information and specifications can be seen here:

//presscentre.sony.co.uk/pressreleases/sonys-new-a9-camera-revolutionises-the-professional-imaging-market-1923969

And for the lens:

//presscentre.sony.co.uk/pressreleases/sony-expands-flagship-g-master-lens-series-with-new-100-400mm-super-telephoto-e-mount-zoom-1923976
- David Kilpatrick
April 19, 2017
Never say ‘zoom with your feet’…
There’s a dismissive and rather superior position some camera club buffs take – ‘why not zoom with your feet?’. It is well worth ignoring. The focal length of your lens, whether your use a zoom or a range of fixed focal length lenses, decides the exact relationship of elements in the picture including one component you just can’t ‘zoom with your feet’, the sky. The depth of blue above the horizon, the scale of clouds, can only be changed by using a different focal length.

Here is the cover of the May/June 2017 Cameracraft magazine, and in a very rare lapse of judgment I used one of my own photographs. I had never photographed this church before despite driving past it on the A7 Scotland to England road through the ‘debateable lands’ for the last 28 years. A quick left turn down a farm estate road led to St Andrews church of Kirkandrews, an 18th-century gem with the unusual feature of being built on a north-south alignment instead of east-west. This put the late March afternoon sun on to the south door and sundial.

Now this is a typical deliberately uncorrected 24mm steep angle shot, and I also have very straight versions taken from further away on the 24-70mm CZ f/4 lens and A7RII. but they are all at between 24 and 32mm with the church smaller and composition using the churchyard and walls. That’s because the sky simply looks best with a wide angle.

Despite some bad press, I’ve found the 24-70mm to be an excellent lens. You can get good deals and Amazon UK is showing discounts up to 19% – check our affiliate link which helps photoclubalpha cover its costs if you buy.

When we pulled up here, there was a car on the other side of the church spoiling the view I had seen from the road, spotting a dramatic old dead tree. We chatted to a lady who was looking after the churchyard and gardens, a lifelong commitment. She said it was a pity the church was locked as the interior was worth seeing – and left taking her car which had been prominently in my planned shot. So, we parked the car in the field further away, and I returned to the area of the tree.

I knew what I was looking for, and at first walked to a spot and composed this at 30mm. But by moving round and just looking at the possible camera positions (and heights above ground) I could see the relative scale of the church and tree could be changed by finding the best angle of view and perspective. This is what using your feet AND a zoom helps you do, and ‘zooming with your feet’ most certainly does not if all you have is a fixed lens. A 35mm or 28mm would have been fine here, but I knew how much clearance I wanted between the church bell tower and the branch, how large or not I wanted the fallen branches to be (and I do not ‘garden’ subjects like this which are someone else’s property).

This shot at 26mm was able to give me more sky. It’s also one which I could straighten for converging verticals (it has space to do that) using Photoshop/Camera Raw‘s excellent tools for this. To the right, there was an ugly wooden barrier to keep livestock off a sapling. Below, you can see why this was not a good addition to any composition. Earlier on there was that white car between it and the church, which had departed.

From this position, I was generally happy with the scale of the tree and church and their relative weights in a vertical composition, but felt it needed to be a little tighter.

This framing at 35mm kept all parts of the tree clear of the church, placed them neatly and avoided any strong foreground of fallen wood.

This example moved me closer to the tree, at 24mm again, giving the most attractive sky and clouds. But I felt the broken main trunk of the tree was slightly too strong and the ratio between the tree and church just missed the mark. Such small differences do count. Normally I don’t show anyone the ‘ringaround’ compositions, only the final shot. In what is essentially a landscape scene, it’s not always that important. In commercial work, including portraits, wedding or fashion you need to realise that a centimetre or two difference in where you place your lens can distinguish good photography from ordinary. This, and the timing of your shot, also marks out the best press photography.

Precision viewpoint is where both your feet and zooming come in. By moving much closer to the tree, and using it as a solid closure to the left hand side of the image, the small forked branch could be positioned to frame the church and no slightly more ugly broken branch ends would be shown. The closer viewpoint was controlled to within an inch or two side to side and vertically, by crouching slightly to get the lens in exactly the position I wanted.

This also kept the church centred and therefore without converging verticals. I was already seeing this as a black and white conversion, and possibly a cover image, with the space necessary for typical cover lines and logo. This was the picture I did use for the cover.

However, from the same viewpoint zooming to 41mm allowed a different crop with a larger scale to the church.

You can see how I have moved to my left just a small amount, and also stepped back a couple of paces to change the relationship between the forked branch and the church. This is the control you gain from a lens like the 24-70mm – and why you should zoom PLUS your feet, not zoom WITH your feet. Above all, you should walk round and look, even without the camera, studying the interplay between foreground, background, middle distance and the sky.

For my first three years of using the Sony full-frame mirrorless system I have been without a 24-70mm, using a range of primes and the 28-70mm instead. Although I had used excellent work from the 24-70mm f/4 in our magazines, from other photographers, there were so many bad reports about it. But 24mm has always been a critical focal length for me, so I had to buy it when a good deal came up (a refurb from Sony, which allows me to recover the 20% VAT which I can’t claim on regular secondhand items). Well, it’s not perfect because at 24mm the focus field is very curved (cap-shaped) to the extent that detail at the edge of the frame is focused on around 45cm when the centre is set to 45m. This can lead to the idea it’s soft. In fact, this curvature improves the sharpness of the tree trunk and the distant church at f/11 – 42 megapixels can be demanding. But if this was a portrait, with a distant scene beyond, it would have the reverse effect and make the outer field seem less sharp.
- David Kilpatrick
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April 16, 2017
Sony launches A99II at photokina
Sony has today released the details of the updated A99II, using a 42MP sensor and 5-axis stabilisation to match the A7RII. It does not appear to have retained GPS and the paragraph highlighted in red later on indicates a weasel-worded possible get out for this – it may not embed GPS in the image files, but instead store a mobile phone location data track on the camera’s memory card. We may guess that this choice could be partly down to cutting out fees payable to incorporate a GPS module. Not the same, guys, not the same:

From Sony’s site, the ambiguous word is highlighted here:

Use Location Information Link to make the most of your camera anywhere you go together. After the camera has been paired to the PlayMemories Mobile app installed on a compatible mobile phone or tablet device, it can acquire location data from the mobile device and record that data with still images. The acquired location data can also be used to correct the camera’s date/time and location settings. The PlayMemories Home application can then be utilised on a personal computer to organise still images imported into the computer on a map.

Edit: note that Sony’s later announcement for A6500 uses specific wording which says that its GPS Blueooth app embeds location data in the images as they are shot. This wording has not been used for A99II. We have not, though the A9II has now been released and bought by some users, been able to confirm how it works yet.

In the Sony release (used almost complete, slightly edited, to form this post) they appear to imply that dual SD card slots are new, which of course they are not, the original A99 has this already. No UHS-II, no USB 3 Not only that, the dual slots are apparently exactly the same spec as the original unless someone at Sony Towers has forgotten to edit their website:

Memory Stick PRO Duo, Memory Stick PRO-HG Duo, Memory Stick Micro (M2), SD memory card, SDHC memory card (UHS-I compliant), SDXC memory card (UHS-I compliant), Micro SD memory card, Micro SDHC memory card, Micro SDXC memory card

Some of the hidden, clever features of the A99 remain like the buttons which are coded to touch with concave or convex tops or a small raised dot, making it easy once you have learned their feel to find them by fingertip. In fact the entire interface remains constant (in the way that Canon did throughout the EOS 1D series) meaning you can pick this up and shoot immediately, coming fom the A99. Only the Silent Controller is significantly improved, and the badly placed Movie button remains exactly where it was.
- Full-frame 4D Focus: Innovative Hybrid Phase Detection AF system with accurate 79 hybrid cross AF points[i] enabled by 79-point dedicated and 399-point focal-plane AF sensors and continuous shooting at up to 12fps[ii]
  There is no AF Illuminator, but please note that -4 EV is quoted with an f/2.8 lens at ISO 100. In the past, AF low limits were always quoted with an f/1.4 lens (although the sensor only works at f/2.8). This is very good.
- 42.4 effective MP 35mm Full-frame Exmor R™ CMOS sensor so it’s essentially an A7RII
- Newly developed optical 5-axis in-body image stabilisation system
- Outstanding operability and reliability in newly designed downsized body
- Internal 4K movie recording in XAVC-S format[iii] with host of pro-orientated movie features
  IMPORTANT: this appears to be a Super-35 4K mode if you want no pixel binning and the highest overall quality but near-full-frame is offered with the usual partial readout.We would add a few extras – this camera has the much-needed (almost essential) Copyright Info function, minimum shutter speed when using Auto ISO, 10/5/2 sec self-timer, Hi+ in addition to Hi, Med and Lo motordrive shooting (not just shifting three settings over a faster range but giving 12, 8, 6 or 4 fps); built-in WiFi wireless including WiFi remote control and NFC (but not, apparently, apps); there are new Highlight and Average metering modes, and for each metering mode, you can calibrate the standard exposure if you prefer your shots slightly lighter or darker than the camera’s default.The A99II can capture 54 uncompressed RAW+JPEG images at 12fps (Hi+) before the buffer is full. There’s no great advantage in capturing RAW only, or JPEG only, and even with Fine JPEG at Hi speed (8fps) the limit is still 71, not ‘until card full’.
  
  Omissions include no Multi Shot Noise reduction, no GPS, and the external DC power supply is no longer via a dedicated socket, instead it uses the dummy battery approach. The camera is still not officially recommended for use in temperatures below freezing or over 40°C/104°F, both of which can easily be achieved in Scotland in a single sunny winter day (even without the benefit of your car parcel shelf oven).
The upgraded autofocus

The newly developed Phase Detection AF System is capable of ‘full-time AF’ and is the first implementation of 4D FOCUS in the full-frame ɑ series, bringing a supreme new level of AF performance to ɑ99 II users. The Hybrid Phase Detection AF System is enabled by combining a precision 79-point[iv] dedicated phase detection AF sensor with 399 focal plane phase detection AF points to produce a 79 hybrid cross AF point[v] array. These cross points deliver incredibly precise autofocus performance and advanced subject tracking of any moving objects right across the image, at high speed. In addition, as there is no moving mirror, TMT enables continuous AF operation and the finder image remains unaffected during any type of shooting, including live view and movie recording.

Low light conditions present no problem to the ɑ99 II. The precision AF system will function properly down to EV-4[vi] brightness levels where most other cameras struggle. Editor’s note: the A99 is poor in this respect and often can’t focus modest aperture lenses at all in low light.

Data flow through the ɑ99 II has been redesigned to allow for high resolution and continuous shooting at high frame rates. A new front-end LSI works with the image sensor and BIONZ X image processing engine, as well as a newly designed shutter unit, to enable continuous shooting at up to 12fps with AF/AE tracking[vii], all whilst harnessing the sensor’s 42.4MP capabilities. The result is an ultra-fast camera that will deliver incredibly detailed shots, even with fast moving objects in challenging light conditions. Thanks to a large buffer and sophisticated data processing, these shots can be viewed immediately after shooting even when in high speed continuous shooting mode and if shots are being taken indoors under artificial lighting, flicker is automatically detected and the shutter is timed to minimise its effect on the end image[viii].

Improvements to the EVF display algorithm now deliver continuous live-view shooting at up to 8 fps[ix] with AF/AE tracking with minimal display lag so that the viewing experience is essentially no different from that of an optical viewfinder. Exposure, white balance and other camera settings are displayed in real time in the viewfinder and continuous live view shooting can be set in 3 stages to match a variety of subjects: 8 fps, 6 fps and 4 fps.

Pixel Power

The back-illuminated full-frame 42.4MP[x] Exmor R CMOS sensor benefits from a gapless-on-chip design and allows for fast readout of large volumes of data as well as being extremely efficient in its light gathering ability. The net result is very high sensitivity with low noise, wide dynamic range and 42.4MP resolution across an ISO range of 100-25600, expandable to ISO 50 – 102,400[xi]. The ɑ99 II has been designed without an optical low-pass filter to allow the finest natural details and textures to be captured with unprecedented depth and realism and the photographer can select compressed or uncompressed RAW files, as required.

5-axis SteadyShot™ INSIDE Image Stabilisation

Having proved to be incredibly popular in the ɑ7 II series of cameras, Sony has designed a new in-body 5 axis image stabilisation system for A-mount cameras which debuts for the first time in the ɑ99 II. In addition to movement in the pitch and yaw axes that tend to occur at longer focal lengths, this system effectively detects and compensates for shift blur that can occur on the X and Y axes when shooting close-up, and roll blur that is often apparent in still images and movies that are shot at night. Newly implemented precision gyro sensors are capable of precisely detecting even tiny camera movements that can cause blurring, providing a 4.5 step[xii] shutter speed advantage that can help realise the full potential of the 42.4MP sensor, in both stills and movies. The effect of image stabilisation can be monitored in the viewfinder or on the LCD screen during live view when the shutter button is half pressed or the Focus Magnifier functions are used. This allows framing and focus to be accurately checked via live view when shooting at telephoto focal lengths or macro distances.

Improved design and operability

The design of the new ɑ99 II has noticeably evolved compared to its predecessor, based upon feedback from professional users. The new model is 8% smaller than the original ɑ99 and has a newly designed grip, magnesium alloy body, dual SD[xiii] card slot and other upgrades that improve both hold and operation. All major buttons and dials are provided with seals and the media jack cover and enclosure edges feature tongue and groove – the result is a body that is both dust and moisture resistant[xiv] and can be used in the toughest and most challenging shooting conditions.

In addition to being designed for faster response, the new shutter unit is also more durable and has passed endurance tests in excess of 300,000 shutter operations[xv].

The XGA OLED Tru-finder has a ZEISS® T* Coating and has a 4 element lens group that includes a double sided aspherical element whilst offering a powerful 0.78x magnification, delivering outstanding clarity from corner to corner. It also has a fluorine coating on the outer lens to prevent fingerprints, dust, water, oil and dirt from sticking, thus ensuring a clear view. Editor’s note: the ocular of the original A99 is a weak point, and in the A7RII Sony finally produced a really good non-squiffy eyepiece optical train which shows a clear view with some leeway to move your eye. So this is a major upgrade as much of the experience of using the SLT models comes down to finder quality.

The silent Multi Controller introduced in the original ɑ99 has been improved so that in addition to allowing control of aperture, shutter speed, ISO, exposure compensation, AF area, AF mode and other settings, it now features a click-stop ON/OFF switch. When ON, the preferred setting for still image shooting, the control clicks, providing a tactile indication of the length of rotation. When OFF, the control turns smoothly and quietly, ideal for movie shooting. Location data acquisition has also been made possible via Bluetooth[xvi] connection to a compatible mobile device and it is now possible to select whether the storage location should just be on a tethered computer or also on camera for easy review without leaving the shooting position. Based upon feedback from a number of ɑ users, the menu structure of the ɑ99 II has also been updated to deliver a smoother navigational experience.

Internal 4K movie at 100 Mpbs

The ɑ99 II enables internal 4K movie recording[xvii] featuring full pixel readout, without pixel binning[xviii], for ultimate high resolution video in the pro friendly XAVC S format. It is capable of recording high quality footage at 100Mbps for 4K recording. A new ‘Slow and Quick’ mode[xix] (S&Q) supports both slow motion and quick motion. Frame rates from 1 fps to 120 fps (100 fps) can be selected in 8 steps for up to 60x (50x) quick motion and 5x (4x) slow motion recording.[xx] A number of features designed for a professional movie production workflow are included such as picture profiles, time code and HDMI clear output and the new ɑ99 II now also offers gamma assist for real time S-Log monitoring and a zebra mode for easier exposure adjustment. S-Log3 and S-Log2 gamma are now included, making wide dynamic range shooting possible with(out) – our edit, the press release says with! blown highlights or blocked shadows making the ɑ99 II easily integratable into a fully professional movie production workflow.

Editor’s note: there’s a problem with the A99II for movies, which also applies to the LA-EA4 and SSM/SAM or other A-mount lenses on the E-mount bodies – the lenses really don’t work well at all. Sony had pictures of this camera with the 24mm f/2 SSM, still a current lens. I sold mine because it could not handle the same AF and exposure control functions as the 25mm f/2 Batis or the 28mm f/2 Sony (which I use) during video shooting. The A-mount was never built for movies, the E-mount has been from the start. However, both are fine using purely manual focus, manual aperture ciné lenses which many professionals prefer.

The new ɑ99 II will start shipping in November, priced at approximately €3600 and full technical details can be seen here.

Editing: David Kilpatrick

Further information can be found on the Sony Camera Channel: www.youtube.com/c/ImagingbySony/ and the

Sony Photo Gallery: www.sony.net/Product/di_photo_gallery/

Our Affiliate links, supporting photoclubalpha:

Check Amazon.co.uk for availability and price

Check B&H stock (pre-order live)

Check WEX (UK)

[i]The number of usable AF points may depend on the lens and shooting mode. Up to 323 focus points are selectable. Not available for movie recording

[ii]Continuous shooting mode set to ‘Hi+’

[iii] Class 10 or higher SDHC/SDXC memory card required for XAVC S format movie recording. UHS-I (U3) SDHC/SDXC card required for 100Mbps recording

[iv]The number of usable AF points may depend on the lens and shooting mode

[v]Hybrid Phase Detection AF active. The dedicated phase detection AF sensor or focal-plane phase detection AF sensor may be used independently in certain photographic situations.

[vi]Central focus point

[vii]The supported focus area will depend on the shooting mode and lens used. Furthermore, when“Continuous Shooting: Hi+” is selected, focus will be fixed at the first frame shot when Hybrid Phase Detection AF is active at aperture settings of F9 or higher, or when Hybrid Phase Detection AF is not active at aperture settings of F4 or higher

[viii]When Anti-flicker Shoot. is ON. Flicker detection at 100 Hz or 120 Hz only. Continuous shooting speed may decrease. Does not function during bulb exposure or movie recording

[ix]Continuous shooting mode set to ‘Hi’

[x] Approximate effective megapixels

[xi]Still images only

[xii]CIPA standards. Pitch/yaw shake only. SAL135F18Z lens. Long exposure NR off.

[xiii]One slot can hold an SD card or a Memory Stick.

[xiv]Not guaranteed to be 100% dust and moisture proof

[xv]Electronic front curtain shutter activated

[xvi]Requires pairing with compatible mobile devices running the PlayMemories Mobile app. Supported devices are Android smartphones running Android 5.0 or later and compatible with Bluetooth 4.0 or later. iPhone/iPad: iPhone 4S or later/iPad 3rd generation or later

[xvii]SDHC/SDXC memory card of Class 10 or higher is required for movie recording in XAVC S format. UHS-I (U3) SDHC/SDXC card is required for 100Mbps recording

[xviii] In Super 35mm recording mode

[xix]Sound cannot be recorded. SDHC/SDXC memory card of Class 10 or higher is required

[xx]In NTSC (PAL) system
September 19, 2016
Sony 28-75mm f/2.8 SAM on mirrorless FF

With the 24-70mm f/2.8 new Sony GM FE lens selling for £1799 (UK) and the A-mount version two 24-70mm f/2.8 for a full £100 more, the cost of a basic mid-range zoom to use with a camera like the A7RII remains very high. There are good arguments to be happy with the 24-70mm f/4 FE zoom, or even the 28-70mm f/3.5-5.6 though that is best limited to use on the A7 (24 megapixel) and A7S (12 megapixel) bodies rather than the A7R (36 megapixel) or A7RII (42 megapixel).

Of course there are good lens adaptors out there and 24-70mm f/2.8 lenses from Canon, Tamron or Sigma with ultrasonic focus drive in Canon EF mount offer one solution. The original 24-70mm f/2.8 for A-mount with its SSM motor of this type can also be found for a fair price. But there’s one lens which I sold after my A7R arrived, mostly because I was parting company with my full-frame A-mount body survivors. It’s the Tamron-based but Sony revised SAL 28-75mm f/2.8 SAM.

Although I did have an LA-EA3 adaptor to use SSM and SAM drive A-mount lenses on the E-mount bodies, the 28-75mm didn’t really work very well on the A7R so it remained on my A99 or A900. I made a few tests and saw that it was certainly OK on 36 megapixels, though even on the 24 megapixel A99 where it played nicely with the AF system it had slightly soft corners when used wide open. They were not any softer than the 24-70mm f/2.8 Carl Zeiss of that time and in some ways the lens was better behaved.

The first thing to do was to fix this lens to the LA-EA3 creating an FE lens unit. Imagine the adaptor is just part of the lens (that’s pretty much how Sony makes many lenses for E-mount anyway). The total unit measures up at 115mm long including the adaptor, and 75mm diameter taking 67mm filters. The lens itself weighs only 565g, the combo weighs 683g with adaptor and lens hood. That compares with the new GM lens at 136mm long and 88mm diameter using 82mm filters and weighing 886g. As I already have a 16-35mm f/4 CZ which covers the 24mm requirement well, the 28-75mm range is just as useful to me as 24-70mm.

While the 28-75mm SAM activates PDAF and multiple AF points, it’s not the full works with tracking and Eye-AF. But it’s also not as noisy as some reviews imply. It’s much quieter than the 85mm f/2.8 SAM, and silent compared to the grinding focus of the 30mm DT SAM macro. Startup is fast, with the lens initialising quicker than FE mount stabilised zooms. The aperture actuation is slicker than with body-drive SAL lenses on the LA-EA4, and quieter. Focus is fast and the only downside is the rotating focus ring which does not support DMF or over-ride on the fly, or auto manual focus magnification. Manual focus requires you to set it on the lens and the body, and whatever you are doing, you need to avoid either turning the focus ring when there is any resistance, or blocking it from turning during AF. It’s a bit vulnerable and the direction of focus is the opposite to normal Sony/Minolta design. The zoom ring which locks at 28mm only operates in the normal direction.

So, what you get with the LA-EA3+28-75mm SAM is basic but fully controlled and communicating, EXIF accurate with profile correctly invoked. It will track with continuous focus and during movies, though slightly noisy for in-camera sound recording; it seems to do so when some SSM lenses, like the 24mm f/2 CZ, don’t play.

As for optical quality, it’s still a 14-year-old Tamron in disguise, but it can match up to 42 megapixels centrally across its full range. The performance over the APS-C image area is superb, even wide open at all focal lengths, with just a hint of misty aberrations slightly masking a super-sharp result on axis. On full frame, a marked ‘cap shape’ deviation from flat field towards the extremes causes strong softening on flat subjects and landscapes at 28mm and is not entirely removed at longer lengths. You would not want to use this at 50mm and f/2.8 if you had a faster 50mm you could fit and stop down to f/2.8. On real three-dimensional subjects at typical working apertures between f/4 and f/11 it can be extremely sharp. The respectable 38cm close focus and 0.22X subject scale (not as good as the new Sony GM 24-70mm) reveal microscopic detail on the A7RII at f/5.6. The shot below is at the closest AF on the large water drop in the centre, at 75mm and f/5.6 – you can see the bokeh is very acceptable, not complex or ‘nervous’ which it tends to be when used wide open for more distant subjects with a slightly defocused background.

A 100% crop from th A7RII file (converted from raw ISO 500 14-bit, without any sharpening for web and with minimal NR) gives an idea how good this lens is and also just how little depth of field you’re ever going to see from a 42 megapixel full frame image used this way!

It would hardly be worth buying an LA-EA3 and a new 28-75mm just to save about £1000 over the GM 24-70mm. If you already own an LA-EA3 and you can find a cut price or good used 28-75mm go for it. The way its aperture works means you’ll get very fast low light focus and minimal shutter lag (but you do need a mark II A7 series body to get the best functioning).

The zoom action is a real pleasure to use, very light but positive, and the overall build and feel of the lens will not disappoint. It also seems to get just the right response from the in-body stabilisation of the A7RII. Sure, 67mm filters may be smaller than many midrange zooms require, but I will either have to use a stepping ring or get a couple of new filters – not cheap, for the quality needed to maintain the lens performance. Also, it’s not weatherproofed.

Here’s a quick set of three hand held (with SSI) comparisons at 28mm – f/2.8, f/5.6 and f/9. I’ve loaded these up at full size so they should open the original Level 10 sRGB JPEG when clicked. The focus in on the foreground railing spike and the fine spider web gives the best idea of how the resolution and contrast of the lens improve from wide open. It’s clearly resolved at f/2.8 but with a gentle ‘glow’ at pixel level. First image – f/2.8.

Second image – f/5.6. If you download all three images and load them into Photoshop, it’s interesting to switch between tabs and see the depth of field change.

The third image is at f/9 and here the ISO is high at 2000. The A7RII can produce great results up to 3200 but I might not choose to have this at 2000. Even so, the sharpness can be judged without problems as the noise doesn’t have much effect on fine detail with current Sony sensors and processing. It always shows more in defocused, smooth areas.

Because I use other lenses – such as the 24-105mm f/3.5-4.5 Sony and 50mm f/2.8 Macro Sony on LA-EA4, 40mm f/2.8 Canon STM, Sony FE 28mm f/2, 16-35mm CZ f/4 and also the unrivalled 24-240mm FE zoom I have many choices overlapping the range of this lens. I remember that for landscape work on the A900 it was hard to beat. Here’s one of my images from that combination, using a 6 second exposure at 40mm focal length, f/8 and ISO 100 with a variable ND filter. With the restrictions on tripod position given by the location, the zoom range of 28-75mm proved just right for a range of studies.

With this lens arriving during a period (for my corner of the UK) of sustained white skies and drizzling rain, it’s not been out and about much. One thing it has done is to focus very well in dim room lighting on my sofa companions –

And, for those who don’t think f/4 is wide enough and desperately want 55mm f/1.8 or f/0.95 lenses, this is at 55mm f/2.8 and of course when the iris of the eye is sharp the fur around it is not and Willow’s nose is blurred. Once again, despite correction for tungsten light at the extreme limit of Adobe Camera Raw, and using ISO 3200, it’s pretty amazing what the A7RII can do seen at 100% (below).

But this super-shallow depth of field is what happens at 42 megapixels. Depth of field used to be worked out based on a 10 x 8″ print held in your hand, not a 6 x 4ft image viewed through the ‘window’ of a screen. Of course for social media you do indeed need very wide apertures because when your pictures are mostly viewed on smartphones, it’s like looking at a contact print from a Vest Pocket Kodak…

To support Photoclubalpha, subscribe to f2 Cameracraft (it’s probably the only photo mag edited by two long-standing Sony system users, myself and Gary Friedman).

– David Kilpatrick

You can find deals for the Sony SAL 28-75mm f/2.8 SAM A-mount lens at B&H Photographic, Wex Photographic for the UK, or Amazon Sony SAL2875 Alpha 28-75mm F2.8 Standard Zoom Lens

April 15, 2016
My new Sony 85mm…

With extremely expensive Sony-fit 85mm lenses in abundance and beyond my (economically sensible) reach, I’ve done good commercial work last year on the Canon 85mm f/1.8 USM and later the Sony 85mm f/2.8 SAM on A7RII. Some of my work relies on showing close-up details with strong differential focus, and hardly any lenses are free from ‘colour bokeh’ issues, so it’s needed some care to process the files and avoid that typical magenta tinge to the background and greenish hue to foreground blur.

This is a typical example. It’s on the Canon 85mm f/1.8, and although this is a fairly clean lens, the background at f/4 needed some post-process work to avoid a magenta colour shift.

In contrast, absolutely no work is ever needed on my Sigma 70mm f/2.8 macro. It shows no chromatic effects in defocused areas. But this is a studio shot at f/10 – and, like many commercial shots, the extreme f/1.4 or f/2 apertures which are so highly valued by the bloggerati simply don’t enter the equation. Differential focus here is precisely balanced against the legibility of the bottle wording at web size (these shots are for a 1440 pixel wide template).

I like to have a choice of wider aperture and macro lenses for this kind of work as they all produce different effects. My 70-210mm f/4 Minolta AF classic, for example, has about the cleanest foreground blur wide open on 0.25X scale 210mm close ups. My 85mm SAM is ‘dirty’ by comparison (but its 60cm 0.20X minimum focus distance still makes it the best 85mm for close work unless you use a macro or a zoom with good close range). Then, we get the Zeiss Batis 85mm f/1.8 popping up followed now by the costly Sony G-Master 85mm f/1.4 FE. In both cases you get 80cm minimum focus and around 0.12X image scale (rather like the 70-200mm f/4 Sony G FE lens used at 190mm and 1m focus).

I really like, on a full-frame camera, to reach one quarter life size on the sensor. One-eighth, the 0.12-0.125X type of scale, means a full A4 magazine page fills the frame. One-quarter, 0.25X, means a quarter of that page or a postcard size fills the frame. There are so many things in the world, from a kitten’s face to a lily in bloom or a perfect cup cake, which are about this size. When I photograph food I often want to avoid including the edges of the plate completely. Those lenses which push me back too far prevent that. I know many users will be puzzled by my preference and see no reason to want to get any closer. Well, that’s just me. I have always done well creatively and commercially from surprisingly tightly cropped, close-up work.

And, being more critical of these new hyper-expensive lenses, we’ve had 80cm focus 85mm lenses for SLR focusing for 70 years now. Really, any new lens in this focal length should focus to 60cm or ideally 50cm without calling itself a macro. That suits the way we live, in our cars, at desks, at home, at tables, in small spaces, giving other people space. I really like to be able to place an item in front of me, or even hold it in my hand, and focus on it. I can’t do that at all with 1m minimum focus (the old rangefinder Leica standard!) and only just with 60cm.

Then I started seeing some work taken on an interesting old lens. It’s small, taking 49mm filters. It is fast, at f/2. It was originally designed by Carl Zeiss and if you were really lucky you might find an 85mm f/2 Sonnar. But for around £100/$150 or a little more for guaranteed condition you can buy the Russian Jupiter 9 85mm f/2 manual preset lens in M42 screw (Pentax/Praktica). And since it’s a screw mount SLR lens, you can add an extra layer of focus extension for very low cost between the E-mount body and the lens.

Above: my Jupiter-9 with Camdiox helical Pentax screw E-mount adaptor fully extended and with a vital lens hood fitted; top, the mount and lens set for infinity focus, lens hood removed.

So last week I assembled a relatively low-cost eBay rig to enable even closer focus than the 60cm of the SAM . This is partly just experimental, our of curiosity to see how well a 1930s Sonnar type design made in 1980s Russia with 1950s technology and coatings can peform. The 85mm f/2 Jupiter-9 is often used to get an attractive f/2 soft-focus with core sharpness, gradually cleaning up until around f/3.5 the softness is gone. It is also used to get neat circular bubbles from strongly out of focus light sources beyond the subject, or a generally very attractive focus transition at any aperture since the 19-blade mechanical iris forms an almost perfect circle at all settings. It focuses slightly closer than 80cm.

With the well-made Camdiox helical adaptor costing under £28 delivered, this is extended in a continuous range to 35cm from the film plane and 0.51X. Obvously, it takes up no more space than my plain M42 adaptor as it is exactly the same thickness at infinity setting – and it does allow true infinity focus. Being solid metal, the combination is not all that light, a dense 490g in its 88mm long by 63mm maximum diameter, 20g more than the Batis. But it feels good. The aperture mechanism is crude and difficult to see and use, but would normally be set first to a chosen aperture such as f/2.8 for the best sharpness with a shallow depth of field, or f/8 for landscapes. It would not be much fun for anyone who likes taking a range of shots from f/2 to f/16, or for anyone wanting accurate half or third stops.

First of all, is this lens even remotely sharp, and can the Sony A7? bodies use it well? Both answers must be yes. Just set the focal length for normal distances to 85mm and the in-body SSS of the A7SII, A7II and A7RII will give amazingly effective stabilisation. Work between f/4 and f/11 and this simple old lens design outresolves the A7R. I was just checking the focus on some calendar text in very dim room light, using ISO 1600 on my A7RII, when I pressed the shutter with 1/40th hand-held –

This was never intended to be seen, just a casual target. These pictures open out to Facebook size, by the way, when clicked – 2048 pixels. Here’s a 100% pixel friendly section from this. I was surprised. The lens was at f/4 and focus was done at max magnification, at the taking aperture.

You need to check this JPEG out by clicking to open/view at 100%. It’s like this right across the frame, corner to corner. There’s a pleasant dimensional quality to the rendering this old lens gives, but it has one massive failing – it flares up dramatically if any light at all reaches the front glass. The only solution is a very deep lens hood indeed.

Making more considered tests, I headed for a target I had set up to explore colour bokeh, that unpleasant magenta to green shift in defocused areas. With this set-up, my 85mm SAM is not bad at all and does benefit from a proper lens profile. As you can see, the music doesn’t seem to change much in colour from front to back though in the full size 42 megapixel file, especially without lens CA corrections, some funky colours do appear.

Here’s how the Jupiter-9 worked out – first of all, it’s one of a number of shots at different distances and angles, not identical to the SAM shots, and this one takes advantage of the closer focus combination of adaptor and lens:

The colour shifts are different, with a bit of a rainbow including red and cyan fringes as well as magenta and green, and the contrast is lower. However, the detail in the very limited f/2.8 focus zone is very fine and over a range of tests the blurring (from the circular aperture) just looks better. No doubt I need to take many more shots with this lens (once the deep 200mm lens hood I’ve found arrives…) but it seems like a worthwhile creative option alongside a number of older manual lenses.

What really interests me is that this same design, with a few refinements of modern manufacture, would surely be worth having. Tamron’s forthcoming 85mm f/1.8 will focus close – it is the special feature of this new lens series – and maybe along with the 35mm and 45mm f/1.8 designs will one day appear in native E-mount. I’d love to see a half-price Batis, a Sonnar f/2 variant instead of f/1.8, with a decent close focus limit around 50cm. Until then I’ll use the SAM on LA-EA3 or LA-EA4 (works well with either) and my assortment of manual set-ups including this Jupiter-9.

Here’s a revision to the post, got some sunshine this morning (day after writing the original post) and with focus peaking and f/5.6 even a little moving target comes out whisker-sharp!

– David Kilpatrick

February 22, 2016
Sony’s precision aspherics

In interviews about the new micron-accurate aspheric lens element moulding process used to increase the resolution of the latest Sony G Master lenses, a visual has appeared which shows the ‘onion ring’ effect that coarser mould machining causes in lens elements.

Working independently, I’ve been aware of this for years – and I have used a point-source photography technique to study lenses. I’m not an optical engineer or scientist, indeed I don’t even have a degree in anything. I came into photography through Victorian books and teenage years experimenting with lenses, developer formulae, building my own equipment and using observation, corollary and deduction to understand how things work. It’s helped me explain difficult technical stuff to many thousands of readers through books and magazines, without using maths or formulae, and very few diagrams.

In the Cameracraft back in 2013 I published a home-brewed rendering of aspheric moulding visual analysis.

Here’s Sony’s visual showing the difference between traditional aspheric moulding (pressed glass aspheric, as pioneered by Leica and Sigma) and their new refined pressing with better engineering.

And here is my home-brewed visual from Cameracraft when I explained the bokeh and resolution issues created by pressed elements (and also, some other aspects of bokeh, which I’ll refer to below the image):

This is the clip from a 2013 article in Cameracraft dealing with broader aspects of bokeh, depth of field, aberrations and how images are rendered. You can download the two-page article here. Nine years after we launched Cameracraft the magazine is going strong, it’s a bit thicker and does have the occasional advert unlike our original, but it is still one of the best ‘never knew that before’ reads a photographer can have drop through the letterbox. You can arrange that easily enough here!

Here is the full article as a downloadable PDF.

Sony’s new superlens was not any better than the Sigma 70mm f/2.8 macro which I still use. My reasons for choosing this macro are simple – it is optically excellent and traditionally made without any aspheric or other special elements, and it uses simple focal extension for focusing, not rear or internal group movement. This means it’s a true 70mm lens even when used at 1:1 and gives the maximum lens to subject distance, for its focal length.

However, it’s MUCH better than the Voigtländer 50mm f/1.4 used for the colour bokeh shift example at the top. Sony’s information makes it clear that the new more precise aspheric moulding allows new surface profiles and the elimination of chromatic aberrations which cause this magenta-green foreground to background shift in so many otherwise excellent lenses. I’ve said that to do so, the new lenses must be what would once have been called Apochromatic, though that term has only ever meant that all wavelengths focused to the same plane and at the same scale. Even past Apo lenses can show poor colour bokeh. It’s interesting that Sigma, after years of plugging the APO (capitals not actually needed, folks!) label chose not to label some new lenses this way even through their performance matched or exceeded earlier APO models. Sony seems to be taking the same view – G Master will be sufficient label to imply very high resolution, elimination of bad colour bokeh shifts, and by implication an apochromatic performance on RGB sensors.

So will I be buying these amazingly expensive, large, E-mount dedicated lenses? Probably not. My unscientific observations tell me there are smaller, lighter, far less expensive lenses which will serve me better. Mirrorless digital camera bodies with high quality EVF and high magnification focusing allow me to do things I could never have done over 40 years ago when I took my first position as a Technical Editor (of the UK monthly Photography published by Fountain Press and edited by John Sanders). Geoffrey Crawley, editor of the British Journal of Photography, showed me how to evaluate any lens quickly with the help of a light bulb, a darkened studio, a roll of background paper and a sharp pencil. Back then you had to expose film, now you can just look through the finder. In a photo store, any LED spotlight will do for a quick check. Focus centre, magnified to max, at full aperture. Move to all corners in turn without refocusing, magnify each time. Refocus each corner in turn when magnified, examine change in rendering of point source. Buy the lens which shows symmetrical, balanced results and the best sharpness of the corners when the centre is correctly focused. Do this with a light source at least 3m/10ft away and if you can, even further. Repeat one stop down, two stops down, with zooms repeat at three or four focal lengths across the range. Never do it at close distance (hint: lens test chart results are only good for the distance you photograph the chart from, which is why Imatest, DxO and other labs have test targets the size of a wall and industrial sized space to work in).

And, if you have a single LED bulb or miniature LED torch, you can examine any of your lenses in a darkened room and produce a ‘bump map’ which will reveal its moulding defects, scratches or fungus, blemishes, and population of dust and microfauna.

– David Kilpatrick

dk-cameracraft-bokeh

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And if you really want a trip back in time – there were huge changes between 2012 and 2015. Cameracraft documents the rise of mirrorless, the growth of hipster retro, and the discovery of older manual lenses as it happened. You can read a full set of the 12 issues via this one-off YUDU subscription:

Read Cameracraft 2012-15
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February 5, 2016