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Summer Photoworld – our final quarterly

The Summer edition of Photoworld magazine is now available on-line in two forms – through our YUDU subscription, and through the Photoclubalpha website membership subscription. This will be our last quarterly, as over the last few years the website had taken over as a more practical vehicle for news and comment.

In place of the quarterly, our printed edition subscribers will receive in summer 2012 the first ALPHA ANNUAL, with 100+ pages and superior production quality. It will showcase good and innovative work and provide a summary of developments in the Alpha system, along with other features, just as MINOLTA MIRROR once did for Minolta owners.

To read (subscrition required) the on-line YUDU page turn version:

Just follow the instructions above!
To download a simple PDF which can be copied to your iTunes Bookstore for iPad reading, or transferred to any suitable eBook, Android tablet, PC, Mac, Unix netbook or similar PDF-compatible device, you will need to be a subscriber to this website (a member), and use this link – Subscription Content. All our back issues are also provided to subscribers.

Sony DEV-5 and DEV-3 digital HD filming binoculars

An invitation to a Sony event on August 15th seemed perfectly timed for the announcement of the Alpha 77 and 65, NEX-7 and NEX-5n. In fact, those cameras were launched in Greece on August 24th – and Photoclubalpha, as a very minor player in this business, was not on the guest list. Nor could we have attended if invited as the diary was already full that week (four days of the Master Photography Awards judging and their Fellowship and Associate annual admissions to be covered).

Wild geese – red-breasted geese, Branta ruficollis, fleeing the camera (©Shirley Kilpatrick, A580, Sigma 18-250mm OS)

However, when the invitation to an event at the London Wetland Centre was issued, with strict limits on the numbers able to register and some air of importance, we decided to do the 700 mile round trip, stay a couple of days for some stock photo shooting, and hope for the best. My mistake, one of our photo mag friends said he didn’t attend because he was tipped off it was not really for photo mags. Even so, most of those present seemed to be photo press not wildlife press…

The Wetland Centre, while a fairly poor location for photography due to the extreme distance the hides are from the wildlife, would have been a good place to launch an Alpha 77 and Alpha 65 (both equipped with improved GPS) and teamed up with the long-awaited 500mm f/4.5 Sony Apo G SSM.

Sadly, it all turned out to be a wild goose chase for Photclubalpha. The object being launched was the new Sony invention of 3D digital binoculars, the DEV-3 and DEV-5 models aimed at high end binocular users wanting to spend their £1300-£2000 on something novel. While impressive enough if you want an electronic viewfinder version of binoculars, they are almost useless to photographers as the still capture resolution is a mere 7.1 megapixels from a small EXMOR-R back illuminated sensor. JPEG only, no raw, no control of still capture settings beyond very basic adjustments.

Digital scoping

Sony took their lead on development, it seems, from digiscoping. Their research showed that serious bird watchers have been fixing compact digital cameras (and occasional DSLRs) to the end of high power spotting scopes to secure unfeasibly long focal length equivalents and capture acceptable frame-fillers of bird life from the distances bird life prefers to remain.

Their research also showed that bird watchers will spend £2000 without hesitation on a high end pair of binoculars.

Now I’m going to stick my neck out and suggest that much of the appeal of digiscoping is exactly the same as the appeal of adaptors and alien lenses used on the NEX. One of Sony’s own Japanese executives at the event was wearing a NEX-5 with a Voigtländer adaptor and a 21mm f/4 Voigtländer lens in Leica M mount.

Digiscopers like their rigs of camera and scope because part of the challenge is to create a perfect digiscoping set up and discover the best cameras, scopes, eyepieces and adaptors for the job. Creating the equipment is part of the hobby. Also, the scope continues to have a purpose of its own as an optical device. It does not matter that the combo weighs 4.5kg and needs a tripod (even that is part of the Meccano-Lego factor, building your personal solution).

Paul Genge of Sony explained how much lighter the system will be than digiscoping – but omitted the fun of making your own digiscoping rig, which is half the point of it

The Sony Electronic HD video capable binoculars do one thing well, and only one thing. They capture HD1080p video at 50fps (60fps in the USA) with the option to use both sensors for 3D video, which is interlaced instead. With lens-based stabilisation counteracting complex rotational movements which may affect each of the two lenses reciprocally, they are a technical masterpiece.

Unfortunately, they don’t have the new high resolution EVF of the Alpha 77/65/NEX-7, but use one closer to the Alpha 55 in detail. Actually, they use two, fed by separate sensors, as a true binocular system with the eyepieces adjustable for interpupillary distance and dioptre settings. They can simulate using electronic screens a binocular view, with a 16:9 or 4:3 format (the sensor is actually 4:3 ratio, and cropped for HD).

This was not at the Wetland Centre (mother coot feeding chick) but at Kew Gardens, which actually put photographers much closer to wildlife more accustomed to humans at close quarters (©Shirley Kilpatrick, A580, Sigma 18-250mm)

But in my pocket was a Minox 6x16X monocular, and in Shirley’s bag a similar Minox 8x16X – lovely little Zeiss-optic metal devices intended for concerts and travel. So I was able to compare the view through the 10X DEV-3 with a simple, monocular, low-cost Minox optical image. There is simply no way ever that any serious nature-watcher would wish to observe the world through the electronic version. It is a world without the individual colours within the feathers of a bird; indeed, it doesn’t even have the individual feathers. Compared to looking through the electronic finder, the optical view was breathtaking in crystal clarity and brightness with exquisite detail enabling the identification and study of subjects.

Real birders use 20×30, 20×50, even up to 30X (Olympus zoom binoculars, for example). Some may choose stabilised binoculars, offered by Canon in specifications including an 18 x 50 with all-weather body. The stabilised view of the DEV-3 and DEV-5 is still a good feature and goes some way to make up for the lack of true image detail.

The zoom of these devices is not the same as the limited range of binocular zooming – and the same goes for focusing. They can focus down to 80cm and retain 3D video, due to the close spacing of the objective lenses; in 2D, macro shots close to the lens are possible, and indoors you can even shoot normal people and group shots though there’s no flash of course. In this sense the Sony invention goes beyond being a binocular, just as much as it falls short of being a true one.

If this looks familiar, the embedded front bit is basically a Sony Handycam TD10E lens and sensor assembly

That’s because all the DEV-3 and DEV-5 actually consist of is the front part of the Sony Handycam TD10E with some optical and design modifications, and a stereo viewing system bolted on the back. This £1300 camcorder offers a 17X zoom range but it’s hard to express that in the same terms as binocular magnification. Its recording is technically identical, the same bitrate and quality of 1080p or 3D 1080i, and its stills are the same 7.1 megapixel maximum. This was admitted by Paul Genge, Sony’s technical sales executive, when showing us the DEV-5.

Most oddly for the target markets of birding, wildlife, safaris, peeping toms, police, military, racegoers and suchlike the DEV models are not ruggedized or water and dust proof. They do accept an external microphone but it’s most unlikely any camera-mounted mic, even a special shotgun unidirectional type, will satisfy wildlife film makers.

Of course, the DEV-5 does include GPS and will record the location of filming but there’s no built-in magnetic compass so it does not tell the full story. The DEV-3, with its lower maximum zoom power, omits the GPS and that is reflected in the price (update – we are told by Paul that the interest shown since the launch is almost entirely in the higher end model with GPS – it provides valuable evidence to bird-spotters, and evidence appears to be what they value most).

Despite the two lenses, the DEV models do not capture 3D stills – only 3D video. Binocular experts will point out that the closely spaced objectives reduce the 3D impression given by long-range binos which have a wider front lens separation. This is vital for close focusing. You either must have adjustable front lens spacing for close-ups (difficult to achieve) or a very limited true stereoscopic effect.

No test

We were not allowed to take any footage with the DEV-5 or DEV-3 though Paul showed some tests of his own, taken during a week trying out the new product all round Britain (between visits to key dealers such as Park Cameras, who are selling them at the Bird Fair which opened on August 19th at Rutland Water, with a free extra chunky high power battery thrown in).

Report from this event, added September 8th – Paul Genge says it was a great success, with over one thousand visitors to the Sony stand trying the DEV models. Many of these visitors had tried digiscoping but had consistently poor results despite much investment in bits and pieces to get it working, and saw the DEV concept as a simple, elegant, nearly perfect solution to their problems.

Birdfair at Rutland Water on August 19th – the blueprint above turned into a real Sony DEV-3/5 booth. Park Cameras offered special deals as the first main distributor and took several orders, all for the DEV-5 model, on the day.

The results looked very impressive as HD movies.

However, there are a few functions which the DEV models could have included had they been designed from the ground up and not based on an existing camcorder. One is pre-shot capture, where the buffer is constantly recording a rolling second or two of video, to be included with the take when you press the button to film. This avoids missing the critical first part of movement of the subject which triggers your own reactions.

The second is slow-motion capture at reduced resolution; 50/60p is already capable of half-speed playback and the shutter speed control use in the DEV models favours better motion freezing than some camcorders which aim for purely cinematic shutter speeds (1/30-1/50th and so on). Had controls been added to force fast shutter speed capture that is very useful for analysing wildlife film frame by frame, or extracting a valuable still image. Had 720p at 100/120 frames per second been enabled, that enables quarter-speed playback of action.

Single-handed operation by Paul Genge – but he’s had a week of weight training before the event! They are actually pretty light, just rather large.

Finally, make no mistake these babies are big. They are not overly heavy, as they are mainly empty plastic shaped to look like a military device. But they are not especially travel friendly, or all that easy to pop under your jacket in a cloudburst.

The ultimate use

Shirley’s verdict was – these are just made for festivals and stadium gigs! The one use not mentioned in Sony’s presentation, and a very popular use for binoculars and camcorders alike, is to see stage performances better and record music. Those little Minox monoculars we carry everywhere with us now were bought some years ago, en-route to an R.E.M concert. And sure enough, from our vantage point in Stirling Castle, they were a good investment.

Now if the tiny Minox monocular happened to include a 1080p HD movie recorder – which it very easily could in terms of size, think of mobile phones, Sony Bloggie and the like – it would be an even better concert companion.

The Sony DEV digital binoculars might get in past some security staff but we reckon they will soon be recognised and banned from events.

Nothing new

The first time we discovered binoculars combined with a camera, we actually got to be the first UK journalists to write them up. This was the Nicnon binocular camera, in its final version around 1975 (it had existed in a cruder design from the late 1960s) – it worked fairly well, but didn’t give any more real magnification than a regular 35mm camera with a 165mm lens and had a useless fastest shutter speed of 1/250th, only barely short enough to avoid camera shake in every shot and never able to stop action.

Later on we tried the Tasco 110 binocular camera but the results were almost useless. Today, of course, we have pocket digicams with zoom lenses going to an equivalent of over 500mm and a resolution which matches 35mm not 110. These can even challenge the concept of the DEV-3 and DEV-5, though I doubt that anything made comes close to the HD video quality. In the end, something is new about the DEV-3 and DEV-5, and that is the HD video in a binocular form.

We can only wish Sony the best of luck with this product. Any serious wildlife watcher or bird spotter will need their regular optical binoculars and their regular tele-equipped DSLR in addition to the DEV-3 or DEV-5. Regardless of six hour battery life and other commendable features, they simply do not and can not replace the other key equipment used in the field, with the exception of digiscope rigs or tele-capable camcorders.

They will sell to wealthy gadget enthusiasts and garden birdwatchers with poor eyesight and big flat screen teles. Over 50s, get in an orderly queue now…

For us, our four-day venture to the former wastelands of Barnes was a wild goose chase (we did see a few). Life was enlivened by road closures due to Olympic ‘test run’ cyclists. This product is not really of any interest to our dedicated photographer readership, for £2000 an Alpha 65 and 70-400mm SSM G would be a better investment for everything except the 3D video. And the market murmur is that 3D has failed, yet again. It’s simply not selling.

Get the full PRESS RELEASE here.

– David & Shirley Kilpatrick

 

Sony UK’s ‘Howto’ videos released

The press release below has just come out from Sony UK. I fear you will be disappointed if you are expecting to watch informative, instructional videos because they are not – they are devoid of high value content, and are just rather superficial plugs for features on Sony cameras. Not all these are even correctly explained or demonstrated, the Low Light video for example has the commentator referring to a camera making two exposures while the LCD display clearly says three (HDR) and talking about DRO-Auto after showing the mode dial carefully being turned to Manual (which disables DRO entirely).

It costs real money to make videos which are meaningful and valuable to the viewer. Real money may have gone on making these, but it’s not reflected in the quality or value of their content. Even the simplest of the subjects covered remains largely untouched by the video, and key information is omitted. Some information is quite misleading, such as the discussion of when to use S, M or L JPEG settings without ever mentioning that large image sizes can be downsized but small ones can not be enlarged without loss of detail.

‘Make sure you use the right image size for the job in hand’ must rank as some of the worst advice ever issued, encouraging digital camera owners to move off Large image size capture and lose vital detail which allows cropping, correction, resizing and higher overall quality. Telling them, in short, to throw away what they have paid for.

Watch the videos, they are free. But they really do not help the digital camera owner or Sony. – DK

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Sony Introduces ‘Howto’ video guides

Discover how to get the most out of your Sony Digital Imaging Products

Sony has launched a series of Howto guides across multiple platforms, to give customers handy visual guides to getting the most out of their Sony Digital Imaging products.

The guides, available via YouTube and a number of major retailers’ websites include easy to understand tips and tricks to enhance the Sony product experience and provide answers to the most commonly asked product related questions. The videos are also available via Sony’s BRAVIA Internet Video service, delivered direct to the TV, Blu-ray player or Netbox.

The guides cover all of Sony’s key product ranges, including Digital Imaging, Network Communication, Home Entertainment and Essentials. They also help explain some of the underlying technologies such as HDMI and DLNA, allowing customers to easily understand the features and benefits of their products.

A snapshot of the featured Howto guides including handy tips for your Sony Digital Imaging products include the below among many more:

Capture 3D photographs and video with your new Sony Cybershot or Handycam
Get the benefits of interchangeable lens cameras
Use Bloggie, Picture Motion Browser and Personal Space
Get better results from your digital camera
Learn to shoot photos in low light

All of the Sony Howto videos are professionally recorded and, where possible, made available in HD. If consumers want to find out even more, each video includes a link to a website where further details are available. This can be accessed via a shortened URL or QR code for smartphones, allowing users to receive product information whenever and wherever they may be.

‘Howto’ content development is based on input from customers, Sony user forums and the Sony support centre.

More HowTo guides are planned and outside of the YouTube channel, the guides will also be used as additional training material for Sony retail staff. Keep an eye on the Sony YouTube Channel for the latest content and product information.

Sony’s London warehouse burned to the ground in riots

The Sony Enfield warehouse and distribution centre was torched by rioting ratboys last night. There are several vidoes on YouTube. Comments include that 750 people have lost their jobs (not sure what this means).

Sony is due to hold a press launch event in south London, just one mile away from the Ealing and Clapham riot zones, early next week. We are booked into a hotel in Kingston on Thames (our expense, not Sony – thought that if we had to travel 350 miles to see whatever new stuff was around, we might as well spend a couple of days visiting our former capital city to remind us why we decided to move to rural Scotland 23 years ago…)

We may decide to call that one off. Will be contacting Sony today.

http://gizmodo.com/5829003/sony-distribution-center-goes-up-in-flames-during-london-riots

Our thoughts are with all those unlucky enough to be trying live alongside alongside these morons.

– David & Shirley Kilpatrick

Watch the birdie – will Sony’s GPS surprise?

Before reading this article, which has attracted a lot of traffic and attention, please remember this is my personal speculation and could be entirely wrong (I’ll be very disappointed if it is miles off target and they omit GPS… or my reading-between-the-lines turns out to relate to a different product like a superzoom pocket camera with improved GPS).

There are plenty of detailed rumours about the specifications of the forthcoming Alpha 77, Alpha 65, NEX-7 and NEX-5n to be found on the Sonyalpharumours website:

http://www.sonyalpharumors.com/sr5-the-full-a77-a65-nex-7-and-nex-5n-specs/

I’m not here to confirm or deny any of this (like most mainstream journalists, even those with some connection to Sony, I don’t get advance information and I am not running a camera-test website which demands a pre-production preview under strict non-disclosure terms).

The image currently circulating most, purporting to show a new Alpha – 77 or 65. Real or not, it looks good enough.

The 12fps stated maximum shooting speed of the semi-pro specification A77 fits in with information given to me as long as three years ago. A vaguely Alpha 700 like prototype was being tested in the Australasia region with 15fps. Most of the other specifications, such as the magnesium or magalloy body, were apparent right from the first mockups being shown if you know your Alpha construction. The strap lugs were the giveaway. You can tell an A900/850/700 type camera (solid metal carcase under a plastic skin) from an A1/2/3/4/5xx Alpha by the strap lugs connected through the skin to the casting.

But what Sonyalpharumours doesn’t elaborate on its something I believe Sony has put into the new Alpha 77 which will make it the ultimate cameras for bird watchers, aircraft spotters, wilderness ramblers, explorers, police forces and the military. It has GPS. I think that when it is seen by the press later this month the GPS will be a big point.

It will be the fastest locking-on GPS built in to any camera, and it will be the first to record ALL the data you need. That will include not only the latitude and longitude and height above sea level, but also the compass direction the camera is aiming in and the inclination of the camera. Combined with very accurate focal length, focus distance and AF locus data, this will make it possible to use the Alpha 77 for photogrammetry (measurement, mapping, object size identification).

I parked illegally and jumped out of the car for this shot of Bamburgh Castle from the village’s main road. For once, the Alpha 55 GPS locked on instantly and gave me the exact location of the camera on the Google Earth terrain view below.

But two days later I spent ten minutes, using a tripod, carefully photographing an uncommon slightly edible mushroom in our garden over 30 miles from this shot. Needless to say, all the frames of the mushroom display the GPS data from Bamburgh as it had failed to update its position.

This is Leucoagaricus nympharum – white field mushroom with ‘dancing maidens’ on its distinctive cap. Some sources state it is edible. For me, it was. For Shirley – noted as one to avoid for the future… but a great photographic subject. Natural light, CZ 16-80mm, 1/3rd of a second at f/14, 80mm, ISO 100, manual focus and settings.

The GPS in my Alpha 55 has been a real help in travel photography. I use Media Pro, the Phase One cataloguing and keywording software. Since this moved away from Microsoft ownership it no longer has its own own Microsoft Virtual Earth pane to open when GPS embedded data is found. Instead, it opens my web browser to the usual Google Map and Earth page. It’s not as neat as having the map tab within the Media Pro software but it works just as well.

However, the A55 GPS frequently doesn’t get a signal during many minutes of shooting at a new location. I have entire shoots of places, lasting several minutes in clear open conditions, wrongly tagged for the last spot visited. Fortunately, if I have left the camera switched on I sometimes find the correct location attached to the next place en route…

The Alpha 77 will, I believe, see an end to poor GPS and it will add the vital compass and inclination functions. Combined with the 24 megapixel resolution, near-silent mirrorfree high speed sequences, and the 1.4X and 2X teleconverter functions (cropping the sensor field but retaining full HD 1080p video, we hope) this will make the 77 the world’s best camera for wildlife safaris. And for those who like to log their natural history subjects, the accurate GPS tagging is the closest thing you can get to digital evidence of the authenticity of your shot.

All major camera companies have their eye on government and military budgets. It was the US forces’ decision to buy Topcon SLR cameras in the 1960s which gave that small but excellent camera brand a few years of glory. They achieved it by making a camera which was tougher and more versatile (in some ways) that the rival Nikon F – with accurate TTL metering that did not need a bulky prism head.

At different times Olympus, Nikon, Leica, Hasselblad and even Minolta have been favourites for government and military use. I think Sony, realising what the high resolution and very fast capture rate of their new technology mean to such users, will have sealed the deal by upgrading the GPS. The Alpha 77 will not only be the world’s best wildlife and wilnderness companion, it will also be the best evidence camera, surveillance camera and spy’s best friend.

Of course this is all pure speculation. It is based on a well-grounded hunch, and on what I would do myself, if I was in charge of the Sony development plan for the A77. There’s no way I would let another GPS module out in the world with less reliability than the average pocket digicam’s version. I would want my top SLR (SLT) GPS to be a world-beater.

Now you’ll just have to wait and see. But wouldn’t it be good if I’m right?

– David KIlpatrick

The truth about 24 megapixels

There is a rumour, which the ides of August may stab in the back or elevate to divine truth, that the coming Alpha 77 will have 24 megapixels.

Because of this rumour, there is a lot of very negative discussion going round to the effect that 24MP on APS-C is far too much and the results will be poor (etc).

Well, they may be, if you think Canon’s results are poor – you can judge that for yourself, try a Canon. But they do not have 24MP sensors!

They also do not have APS-C sensors, in the same way that Sony does. They have smaller APS-C sensors with lots of pixels cut off all round the edges. Sony has chunky big APS-C sensors with acres of extra pixels to spare. This is a slight exaggeration of the situation, but hey, I may as well join in the mood of unrestrained opinion!

Facts: Canon’s 18-megapixel sensor makes images 3456 x 5184 pixels in size (give or take a few, depending on your raw processor). Fact: their smaller 1.6X factor sensor measures 22.3 x 14.9mm. Fact: Canon states it is approximately a 19 megapixel sensor with 18 megapixel final output.

Facts: Sony’s 16.2 megapixel sensor measures 23.5 x 15.6mm and into this packs 3264 x 4912 pixels (active area).

If you made a current Canon pixel-pitch sensor the same 1.5X size as a Sony sensor, it would be around 19.7 megapixels active from a 21 megapixel total. If you put Canon pixels on an existing Sony 1.5X sensor, you would be up to 3618 x 5463 pixels and 24 megapixels needs to be 4000 x 6000.

Clearly it’s not the quantum leap some people think, just a quantum leapfrog over Canon’s back with the benefit of the larger sensor. And it’s worth considering that APS-C covers sensor sizes up to a true 24 x 16mm, for Super-35 video use, and that such sensors have already been made. A few wide-angle lenses and zooms might be a bit tight on the image circle, but that half millimetre one way, 0.4mm the other way, adds up to a surprising number of pixels, enough to take the 19.7 megapixels up to 20.7 megapixels without changing from Canon’s current pixel pitch.

So don’t panic. The chances are that 24 megapixels on proper, big Sony APS-C will perform very well. If you’ve got the glass and the technique to make it…

– David Kilpatrick

 

Mapping the planes

Samsung has a patent and a plan for using two lenses with triangulation (image offset) depth detection between two images in what is roughly a stereo pair. Here’s a link:

http://www.photographybay.com/2011/07/19/samsung-working-on-dslr-like-bokeh-for-compact-cameras/

Pentax also have a system on the new Q range which takes more than one exposure, changes the focus point between them, and uses this to evaluate the focus map and create bokeh-like effects. Or so the pre-launch claims for this system indicate, though the process is not described. It’s almost certain to be a rapid multishot method, and it could equally well involve blending a sharp image with a defocused one.

In theory, the sweep panorama function of Sony and some other cameras can be used to do exactly the same thing – instead of creating a 3D 16:9 shot it could create a depth mapped focus effect in a single shot. 3D is possible with sweep pans by simply taking two frames from the multi-shot pan separated by a certain amount, so the lens positions for the frames are separated enough to be stereographic. 3D ‘moving’ pans (scrolling on the TV screen) can be compared to delaying the playback of the left eye view and shifting the position of subject detail to match the right. But like 16:9 pans, they are just two JPEGs.

All these methods including the Samsung concept can do something else which is not yet common – they can alter any other parameter, not just focus blur. They could for example change the colour balance or saturation so that the focused subject stands out against a monochrome scene, or so the background to a shot is made darker or lighter than the focused plane, or warmer in tone or cooler – etc. Blur is just a filter, in digital image terms. Think of all the filters available from watercolour or scraperboard effects to noise reduction, sharpening, blurring, tone mapping, masking – digital camera makers have already shown that the processors in their tiny cameras can handle such things pretty well.

Once a depth map exists there’s almost no limit to the manipulation possible. Samsung only scratches the surface by proposing this is used for the esoteric and popular bokeh enhancement (a peculiarly Japanese obsession which ended up going viral and infecting the entire world of images). I can easily image a distance-mapped filter turning your background scene into a Monet or a van Gogh, while applying a portrait skin smoothing process to your subjects.

Any camera with two lenses in stereo configuration should also, in theory, be able to focus using a completely different method to existing off-sensor AF – using the two lenses exactly like a rangefinder with two windows. So far this has not been implemented.

Way back – 40 years ago – I devised a rangefinder optical design under which you can see nothing at all at the focus point unless the lens was correctly focused. It works well enough for a single spot, the image detail being the usual double coincident effect when widely out of focus, but blacking out when nearly in focus and suddenly becoming visible only when focus is perfect. I had the idea of making a chequerboard pattern covering an entire image, so that the viewfinder would reveal the focused subject and blank out the rest of the scene, but a little work with a pencil and paper quickly shows why it wouldn’t work like that. The subject plane would have integrity, other planes would not all black out, they’d create an interestingly chaotic mess with phase-related black holes.

Samsung’s concept, in contrast, could isolate the subject entirely – almost as effectively as green screen techniques. It would be able to map the outline of a foreground subject like a newsreader by distance, instead of relying on the colour matte effect of green or blue screen technology. This would free film makers and TV studios from the restraints of chroma-keyed matting (not that you really want the newsreader wearing a green tie).

The sensitivity of the masking could be controlled by detecting the degree of matched image detail offset and its direction (the basic principle of stereographic 3D) – or perhaps more easily by detecting exactly coincident detail, in the focused plane. Photoshop’s snap-to for layers works by detecting a match and so do the stitching functions used for sweep and multi shot in-camera panorama assembly. Snap-to alignment of image data is a very mature function.

Just when you think digital photography has rung all the bells and blown all the whistles, the tones of an approaching caliope can be heard rolling down the river…

– David Kilpatrick

 

Pentax 645D Japan announced

Hasselblad has their Ferrari edition, Leica has the Ti and other special editions – and now Pentax, already making a veritable rainbow of K-r colours, are adorning their flagship 645D Medium Format system with a classical Japanese finish. The 645D is pretty much what happens when you approach medium format without any preconceptions and with a lot of experience in the consumer digital market; get a K DSLR and a medium-format digital sensor, and you get DSLR usability and medium-format images.

Produced to celebrate Pentax’s win of the 2011 Camera GP – with the 645D crowned “Camera of the Year” – the 645D has a hand finished lacquer body treatment and is available strictly to order for a two month period; delivery could take four months.

The release also confirms support for the O-GPS1 module, though the star tracking will not be applicable to this fixed sensor camera.

Official release after the break.

Continue reading »

Pentax Q up to battle it out with NEX and Ricoh

Although it’s not Alpha, this product announcement – embargoed until 5am UK time, 23rd June, though no doubt by adhering to the embargo we will be a day later than hundreds of websites breaking it – speaks volumes for the impact of Sony’s Alpha system, its interformat lens compatibility, and the future of non-SLR systems.

Kenko, a Hoya group company like Pentax, showed a C-mount digital camera body in February, as a prototype planned for release this summer. Nothing more has been heard of this project. It looked rather like the Pentax in a way.

But Pentax Q is not a NEX competitor as it uses a tiny lens mount and a tiny sensor. It’s more like today’s equivalent of the Pentax 110 SLR system. Only Ricoh currently uses such small sensors in a nominally ‘interchangeable lens’ (not really) camera format. And our own testing of the Fujifilm F550 EXR, with a similar back-illuminated CMOS sensor, indicated that the gap between such microformats and the APS-C subformat is massive.

Just as your first dust spot will be… the anti-dust system is going to have to be 100% efficient, as a single dust bunny landing on a 1/2.3″ sensor will be disaster.

The lens throat is approximately 38mm diameter, very slightly smaller than Leica screw. The back focus is around 9mm, or half the thickness of the NEX body from sensor surface to flange. This will present the anti-shake, anti-dust vibration mounted sensor (on a magnetic carriage) in a fairly exposed ‘well’. The high speed limitation of 1/2,000th is unexpected, but the camera does not use a focal plane or electronic gating; instead it uses leaf-shutter lenses, which due to the small aperture size, can achieve this fast speed. But they can still only manage 1/250th flash sync, when it would be expected that a leaf shutter on this scale could achieve 1/1,000th.

Here is the Pentax Q system, due to go on sale in the Autumn (press release with comments).

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