Cameracraft magazine – Taking your practical photography further

Tag: A900

  • The EVF future

    At photokina 2010, Paul Genge from Sony pretty much told me that Sony’s future lay in the EVF (translucent mirror or otherwise, Electronic View Finder) models. He was not able to say anything firm. Since then, I’ve spoken to him on several occasions and he has repeated that Sony left all options open but the EVF design was likely to be the way ahead. What he has not said directly to me is that conventional SLR design – Optical View Finder – was off the roadmap.

    EVF does away with the need for the finder to be positioned anywhere near the optical axis. Noses can safely hit thin air not a rear screen. Unless you are left eyed. NEX-7 with ocular surround fitted.

    Although Sony did not attend Focus on Imaging 2012, the UK website TechRadar secured an interview statement during Focus week, in which Paul appears to have confirmed without ambiguity that the future was EVF-only, and that the forthcoming full frame successor to the Alpha 900 would be an SLT-EVF design. At the same time, we learn that the 70-200mm SSM G and 70–400mm SSM G lens are to be revised for 2013.

    We know, from several sources, that Sony is not currently making all its lenses – even the high end ones – in one facility, or in its own workshops. I believe the 70-400mm SSM G is a contracted-out design and that the 70-300mm SSM G has always been made by a third party lensmaker. This is nothing new; the Minolta 100-400mm APO was patented by Tokina and sold to Minolta as an exclusive (no-one else got the lens) and the same company made some if not all the 100-300mm APO lenses. Using different sources means that various types of coating are appearing; traditional Minolta style – the multi achromatic coating, Carl Zeiss T*, Tamron’s BBAR-derived coatings, some Sony multicoatings of unknown pedigree on Chinese SAM lenses, and a new water and oil resistant coating due to be used for the revised 70-200mm and 70-400mm.

    This coating is nearly always combined with weather or splash proof design, and companies which have the ability to apply it include Hoya (Tokina, Kenko, Marumi, Pentax), Olympus, Canon, Nikon, and Sigma. Sigma is very significant as they have installed new coating lines recently and they are going through a bit of a subcontracting boom. Their facilities are all in Japan, they are on high ground and were slightly affected by the earthquake but not by the tsunami. They have a long history of building lenses and cameras for Leica, Carl Zeiss, Panasonic, Olympus, Canon/Kodak and interchangeable lenses for nearly all the major names.

    If the high end tele zooms are to be revised, weatherproofing and the new coating will certainly arrive along with a synchronisation of lens appearance and finish. But I’m willing to bet something else is involved. The SSM focus system is only partially suitable for contrast-detect operation. It works, on static subjects, but unless some major advance is made in CD-AF it’s lacking the refinement and speed of the AF found in SEL (native Sony NEX) lenses. I’ve tested the 70-400mm on the LA-EA1 with NEX-7, I can work with the lens comfortably on most subjects and the camera is very good at refusing to take the shot until focus is 100% locked.

    All that just to get 2X the magnification – NEX-7 with LA-EA1 and 70-400mm SSM G (an operational kit, if not fast) compared to Tamron 18-200mm NEX lens with the correct type of contrast-detection friendly focus motor and protocols.

    What Sony must surely want to do is dispose of the SLT (‘translucent’) pellicle mirror and the Phase Detection AF module. It makes most sense to focus, meter, view and expose from one single sensor. In order to do so, lens focus motors need a slightly different control protocol. SSM lenses are already CD-AF compatible, as are SAM onboard focus motor lenses, but they don’t match the NEX system SEL lenses. Sigma HSM and Tamron USD Alpha mount lenses are not CD-AF compatible and do not work correctly on the LA-EA1 adaptor. Upgrading matters most with tele lenses, and they are also most likely to be used in adverse weather for wildlife, news or sports. So my guess is that the upgrade to these lenses will be comprehensive and that it will look forward to possible Sony Alpha bodies with either no SLT mirror, or a movable SLT mirror and choice between PD-AF and CD-AF.

    As for the EVF itself, it’s one stage away from being better than a very good optical finder on balance of qualities. Unlike optical finders, the EVF is not susceptible to user eyesight error (incorrect dioptre correction, combined with eye focusing accommodation) and presents the user with a low resolution but otherwise very accurate view of the image focused on the sensor. It can do this at light levels where optical finders become difficult to use, while also presenting a review of the captured image if desired – ‘shot success’ confirmation.

    Differences between the ‘identical’ EVF of the NEX-5n accessory finder FDA-EV1S and the NEX-7 fixed built-in version are mostly down to the difference between the 16 megapixel generation 2 sensor, and the 24 megapixel. Response speed, low light noise, quality of colour and contrast are all influenced more by the two very different sensors. User observations that one is better or worse than the other will nearly always be down to this, and variations in settings between the two cameras compared.

    There are things you can do on an EVF, such as magnifying a focus point well away from the centre, which simply can’t be done at all with an optical finder and may not always be convenient to do on a rear screen. The fact that EVFs permit eye-level video shooting, and that video is now a permanent feature of the Alpha class of camera from entry to semiprofessional, makes the EVF design change more inevitable.

    Paul Genge had a short exchange of information with me when I was considering selling my Alpha 900 and all my frame Alpha lenses (after starting to use the A77). He said I’d regret selling my good full frame lenses when I replaced my Alpha 900 with a full frame model I would just not believe. His message was ‘you wait – you’ll not regret it’. So, I sold my old Minolta-era full frame lenses and bought myself a brand new 28-75mm f/2.8 SAM, Sony 50mm f/1.4 (replacing Minolta vintage), a 24mm f/2 Carl Zeiss SSM, and a 70-400mm SSM G. I kept the Alpha 900  and a few lenses I like which are unique in their function, such as the Samyang 85mm f/1.4 manual, the Sigma 70mm f/2.8 Macro, the Sigma 12-24mm and an old 16mm f/2.8 full frame fisheye. Instead of getting out of full frame, I re-invested in it.

    I’m expecting the Alpha 900 replacement to be either an SLT design like a scaled-up A77 with 36 megapixels, or a second generation hybrid SLT design with a mirror you can raise to use CD-AF or manual live focusing. I’m hoping that it will appear with a new 28-75mm, 24-70mm or better midrange f/2.8 with improved SSM, weatherproofing and new coatings like the 16-50mm f/2.8 DT.

    – David Kilpatrick

  • Changing the Alpha 900 focusing screen

    This is not a step by step, since the instructions for this operation are very clear and the procedure is simple and nearly foolproof. It is simply a reassurance for those worried about changing their screen, with some tips.
    (more…)

  • Canon EOS 5D MkII, Nikon D3X, and Sony Alpha 900 compared

    This set of full size shots was taken with the still life left set up, because the Nikon and Canon cameras were not here at the same time. The report originally appeared in December 2008 on photoclubalpha. It compares the A900, 5DMkII and D3X using the converters supplied by the makers – Image Data Converter SR2, Digital Photo Professional, and Capture NX2. Each small image in the article can be clicked to open a Level 10 quality full size JPEG – beware, the largest is over 13MB of data.

    (more…)

  • Sony Alpha 900 and Nikon D3X raw file noise comparison

    Like Mike Johnston writing in The On-Line Photographer, I’m aware that any attempt to line up one or more cameras and show comparison images or make judgements is on to a loser from the start. And any webmaster who puts an external link in the first half dozen words of a new post is losing the plot too! But here, for what it’s worth, is the first line-up of results processed using the same software from A900 and D3X uncompressed raw files converted without sharpening or noise reduction.

    (more…)

  • Studio comparison A900, 5DMkII, D3X

    This set of full size shots was taken with the still life left set up, because the Nikon and Canon cameras were not here at the same time. It compares the A900, 5DMkII and D3X using the converters supplied by the makers – Image Data Converter SR2, Digital Photo Professional, and Capture NX2. Each small image in the article can be clicked to open a Level 10 quality full size JPEG – beware, the largest is over 13MB of data.

    (more…)

  • Nikon D3X versus Sony Alpha 900 – ISO 1600

    Using a light level typical for tungsten light shots at 1600 (1/60th at f8 = 1/500th at f2.8 for action, 1/250th at f4 for concerts etc) I have made a quick first day – D3X arrived this afternoon – comparison which, in the process, also evaluates two lenses (24-120mm VR Nikkor and 28-105mm RS Minolta) and two anti-shake systems. Sadly, my 5DMkII test kit went back on the same City Link van which brought the Nikon kit. Look out for my Nikon review/s in the British Journal of Photography soon.

    Nikon image:

    http://www.pbase.com/davidkilpatrick/image/106952293

    Sony image:

    http://www.pbase.com/davidkilpatrick/image/106952572

    There are caption notes to each image. The point of targeted focus was the end of the fingerboard with the spattered rosin on it. Feel free to download and print. The red rosin cloth is interesting, so is the sharpness of the point of focus. Clicking on the small images here will open a full size 24 megapixel file in each case!

    Ref the exposure difference: these were locked down manual exposures. The Sony does not appear to achieve a true ISO 1600. However, when shooting the same subject using auto exposure, the Sony image is perfectly exposed and the Nikon consistently overexposes. Here, I have set the exposure to the correct density for the Nikon.

    – DK

  • The Alpha 900 as a high ISO body

    Following the review on dPreview – more than anywhere else – Sony’s extremely poor JPEG engine with its associated wide radius chroma blur and strong luminance smoothing noise reduction has proved to be a dog well capable of biting its master. Definitely a dog, anyway. But this performance is not what the camera can really achieve. In fact it’s perfectly capable of delivering good high ISO shots in typical situations.

    (more…)

  • Alpha 900 and photokina: Part 1

    OUR final production Alpha 900 body arrived on Saturday September 20th, and went along to photokina 2008 on Monday 22nd where it was used in a routine way – without flash – to take whatever pictures were needed for magazine reports. Sometimes it can be better just to use a camera on whatever difficult or poor subjects the world throws at you, than to devise impressive test situations.

    We arrived in time to register with the press office, discover that our hotel had sold our room (and have a complimentary beer while they unsold it!), and head off into the woods beyond Cologne’s suburbs for a dinner organised by Nikon UK. The presence of an Alpha 900 was not an embarrassment and Nikon execs were interested to see it; they all visit each other stands and have a thorough look at the opposition offerings during photokina anyway!

    At ISO 800 the A900 isn’t even having to struggle with strange lighting conditions like this (bright enough to see your food) but later on, when the UK press party had thanked Miwa-san and his colleagues for an enjoyable evening, we hit Papa Joe’s in the Alter Markt. This bar is famous as the meeting place for the international photo press during photokina – but it’s also very dark, crowded and full of musical automata and illuminated signs. If there’s any place which would be destroyed by on-camera flash, impossible with bounce flash, it’s Papa Joe’s at night – short of filmset style multiple head lighting, ambient light is the only way to get a record. So the Alpha 900 had to be set to ISO 3200 and +1 over-ride to cope with the bright parts of the extremely contrasty scene fooling the meter.

    An 11.2 megapixel version of this shot can be opened by clicking the picture. Why 11.2 megapixels? It is processed from a cRAW file using ACR 4.6 RC, and this is one of the downsized options you get. The Alpha 900 native resolution is the maximum size in the list of exported sizes now. While ISO 3200 is not going to beat a Nikon D3 (etc) when viewed pixel for pixel, 24.5 megapixels versus 12.2, when you reduce the size of the A900 image to closely match the D3 size results in similar conditions give the A900 an edge in detail resolution – and slightly less mushy noise.

    So, what I’ve done to make real comparison possible with the A700/D300/D3/D700 and similar +/-12 megapixel models is to resize all the photokina shots on the A900 to 11.2 megapixels export.

    Here is one of Papa Joe’s musical automata during playing. If you think the skin looks a bit plastic – it is!

    For the full sized image (again, accessible by clicking the in-line image) some sharpening, some luminance and chroma NR were all applied because it could take this without getting rough. Here is a section of the image seen at 100% (of the 11.2 megapixel export) with no sharpening, and no luminance NR – just a colour NR setting of 50 in ACR. Check out the eyelashes:

    Is this good for an ISO 3200 image processed using these parameters? I believe it is. I have used the Nikon D3 and D700 in similarly low light conditions, but mainly the D3. I know what the noise of the D3 looks like, and have praised its high ISO performance particularly at 6400 and above – at the time of its launch, nothing else went above 6400 or did 6400 as well. But that the D3 is ‘noise free’ is a myth even at ISO 400.

    Here is a similar 100% section of a D3 ISO 3200 shot taken in a very similar level and quality of light, with some similar colours, and at the same aperture – though my photokina shot used an inexpensive KM 17-35mm D lens at f5.6 and 30mm, while the D3 shot uses a very expensive 24-70mm Nikkor at f5.6 and 24mm:

    Now in my book, at the very similar 11/12 megapixel size the D3 has a much softer resolution and shows a more distinct (but film-like, and evenly distributed) noise grain. I think the A900 downsized to 12 megapixels will display higher detail resolution, and less noise before post-processing, than a similar Nikon D3 processed from raw. JPEGs are a different matter; the Alpha 900 ‘Fine’ JPEGs are not pleasant, and get worse as you increase the ISO setting. That is why, after experimenting with Extra Fine JPEG (much bigger than a cRAW!) and RAW+JPEG, I shot everything using cRAW.

    In the morning – with just a single day to spend at the show – I found myself on the wrong S-Bahn train, and had to return from the next stop to get the right one. Travel is free throughout Cologne public transport when you buy a Messe fair ticket (or at least, a photokina ticket) or have a press card. By luck, the train which arrived to return me was branded Sony Alpha!

    Now if you doubt just how extremely sharp the Alpha 900 gets using normal ISO speeds, and exporting to 11.2 megapixel size, click this one and view full size. Look at the structure of the ‘foam’ below the Alpha camera and you’ll see moiré patterns. The camera, here, is outresolving the subject. The Alpha 900 has a unique AA filter, which is positioned well to the front of the CMOS imaging sensor. There is a big gap. This has two effects – first, it places all dust further from the image plane, meaning that most minor sensor dust will never be seen at all.

    Secondly (though Sony do not say this) when you move an AA filter further from the sensor, it must be weaker. The diffraction pattern which softens the image has a strength linked to the distance between sensor and filter – try putting a soft focus filter on a printed page, then lifting it up slowly, to see why this is so. The weaker filter, further from the sensor, has a much less destructive effect on micro detail contrast and is especially friendly to wide angle lenses.

    I was shooting very quickly – these were barely planned, I just had time to register the Sony branding, shoot, and jump on the train. Inside, I had to lean over between people to get the right angle for a Cologne view – no time to alter the camera settings, or do anything except focus-lock on the Alpha symbol and recompose:

    The man whose arm can be seen near the Alpha was surprised by my sudden invasion of his space but spotted the camera and the symbol and realised what I was doing. Again, click the pic to blow it up!

    Approaching the Messe halls, Sony had large posters up:

    And in the flowerbeds beside walkways and roads, more flexible displays:

    During the day, it began to rain heavily meaning we didn’t even do our usual walking back over the bridge into the city centre, and finding our way back to the attractive Heumarkt square ‘Albergo XII Apostel’ hotel through the old town. A taxi was the only way to keep dry. So, I have no idea if Sony ‘owned’ Cologne the way Nikon and Canon (and others) have in past years.

    Shirley and I have been visiting photokina now for 35 years – our first was in 1973, as guests of Praktica staying in their chartered Rhine hotel boat. From 1974 onwards, photokina became biennial in even years only. We started with an ‘odd one’!

    In the next part of this report, I’ll show some of the stands and products and visit the Sony stand itself. Don’t worry, they didn’t launch anything new – it was all unveiled two weeks before and on sale, like my own Alpha 900, before the event started.

    – David Kilpatrick

  • Alpha 900 – finder and frames

    It’s not going to be long before we see the Alpha 900, and some cameras are known to be out there on trial in the hands of Sony staff and pre-release testers. I am not one, so rest assured, this is not a leak! What can you expect from the Alpha 900’s full-frame prism finder?

    (Note: this post was written in early August – it is now 100% certain that the finder is 100%, and at 0.74X magnification will be – as had been hinted – the largest of all current DSLR finders in apparent visual terms except the EOS 1Ds Mk III which is 0.76X. Comparisons: EOS 5D 0.68X, Nikon D3 0.70X)    .

    (more…)

  • Photokina – a look back, and forward

    At the end of September 2006, I set off for a quick visit to photokina in Cologne, having parted company with Icon’s am-pro magazine ƒ2 and not really needing to report on the whole show in detail. Here’s the report I wrote then, with photos, and some thoughts for the 2008 show. (more…)