But now, thanks to the wonder of changing language, translucent is also going to have to mean transparent, or semi-transparent. Pellicle, semi-silvered, whatever term you wish to use.

Unfortunately, for this writer the misuse of the word translucent stands as one of the biggest schoolboy howlers ever imposed on the entire world by the ignorance of a corporation. It’s such a glaring error I can hardly bring myself to use the term – others, like Dave Etchells, have happily assimilated the new meaning into their technical lexicon. And as the video above shows, they’ve made it into a trademark, a permanent part of the future of this technology.

Wiki, and pretty well every dictionary ever published, disagree with Sony’s imaginative use of a word from which they have now removed its exact meaning:

Wikipedia: “Transparent materials are clear, while translucent ones cannot be seen through clearly.”

Merriam-Webster:

trans·lu·cent/transˈlo͞osnt/

Adjective: (of a substance) Allowing light, but not detailed images, to pass through; semitransparent.

(the semi bit of semitransparent cited here seems to mean semi-detailed, vaguely delineated – not slightly darker; otherwise the primary definition of the word is diluted).

There has been some heated argument on dPreview forums about this post of mine (my view is shared by many). No-one has made the point that words evolve to have useful exact meanings. Transparent and translucent are words which may once have shared a common poetic meaning in 18th century descriptive writing, but whose meanings were refined with the progress of science and technology. This process in the course of over 200 years resulted in a useful distinction between the meanings of transparent and translucent. Sony’s commercial misuse of the word Translucent is damaging to the English language and to the scientific and technical lexicon; it predisposes future confusion about the meaning of the words.

It is also a fait accompli; there is no turning back, since Sony’s corporate stance is much like that of Mrs Thatcher; no u-turns and never admit to be being wrong. They have also no doubt invested hundreds of thousands of dollars in the consultancy involved, and the registration of the term as a trademark, the creation of branding artwork.

They could have branded the mirror TransLumina® or, more usefully, just called it a transflecting mirror – transmitting-reflecting. That term is already used to describe the sort of mirrors used in ‘Big Brother’ with cameras behind them.

As to whether it’s a true pellicle mirror (a thin stretched film of vacuum coated Mylar or a similar polymer) no-one seems to be clear. It moves out of the way to allow sensor cleaning but could be relatively fragile. It certainly does not need to move to allow 10fps (Alpha 55) or 7fps (Alpha 33) continuous shooting. Sensor dust is often created within the camera by wear and tear on the shutter mechanism, so access for cleaning is essential and the mirror can not be designed to seal the sensor chamber. The Alpha models still have a shutter, that’s the next thing we shall see eliminated. That old rumour of the 15fps silent shooting Alpha DSLR seems to be more than a rumour; we are almost there.

For many users, the critical advantage of all four new Sony models will be HD Video with sensor-based in body image stabilisation. This will enable all kinds of lenses from macro to ultrawide or soft focus, manual adaptations and Minolta AF legacy glass to be used for video with confidence.

Welcome back the circular polariser, unlike mirrorless ILC cameras these new models will not allow the use of linear polarisers without AF efficiency reductions, but exposure should be unaffected as the sensor itself provides the metering with 1200 zones.

This will be one of the tests reviewers need to carry out on the new pellicle mirror Sony Alpha 33 and 55 models – to confront them with not only polarising filters, but conditions in which light is naturally polarised. How will they render sky gradations or reflections off water?

Two further Alpha models are being released, which are essentially updates for the 500/550 – the Alpha 580 which will hit the shops before the winter buying season, adding 16.2 megapixels and a 15-zone AF module, HD 1080p video and (non-video) Contrast Detect AF with all Alpha mount lenses. The 560 will not arrive until some time in 2011, using a 14.2 megapixel sensor.

Versatile features

More of a landmark than a benchmark, the inclusion of 10fps continuous shooting with active phase detect AF and 16.2 megapixel file size in the Alpha 55 is unprecedented and possibly unforeseen by competitors, in this class of sub-$1000 consumer DSLR (let’s continue to use the term, since they are clothed as DSLRs). The dual format card drive supports the 30Mb/s transfer rate of the latest Class 10 SDHC cards and Sony’s fastest MemoryStick Pro Duo generation. The HD video also has a reasonable 17mbps  bitrate.

The new technology has been well documented before the launch, but the fine detail of the new cameras is now clearer. The Alpha 55 is some markets will incorporate GPS geo-tagging for stills and videos (we wait to see whether raw files are tagged, and how accurate this is – the accessory Sony geo-tagging system available to date has only permitted JPEG tagging, and has not been accurate enough to know which street in a town the picture was taken in).

Rumours that the 33 and 55 bodies would be SSM/SAM only, with no internal focus drive, were unfounded as Sony states clearly that both are compatible with ‘the full range’ of over 30 Alpha lenses (indeed, the product shots of the 33 and 55 alone show the 18-200mm SAL DT lens fitted). The 55/33 1080i/60p (1080p in AVCHD camera archive format) video claims ‘smooth, precise’ phase detect auto focus during video shooting, but makes no reference to this being limited to in-lens motor lenses. Therefore we can assume it works with in-body AF drive lenses as well, and you just have to edit the soundtrack.

The new ISO 25,600 mode does not imply a radical sensor change as it is only available using Multi-Shot Noise Reduction, which requires a burst of 6 frames at the 10fps/7fps native maximum speed of the camera, and can not save raw files. The ISO range of the sensors is 100 to 12,800. Is this range quoted as absolute, or after accounting for the semi-silvered mirror light losses? If it’s the range before allowing for the mirror, then the 14.2 megapixel sensor of the Alpha 33 may be more like the Nikon 3100′s sensor than the NEX (ISO 200-12,800) is.

Thom Hogan has shown pixel dimensions and size data which support Nikon’s claim to have an entirely different sensor fab line of their own, compared to the A550/NEX sensor. But how about compared to the A33/560 sensor?

The 55′s new 16.2 megapixel CMOS will probably appear in the forthcoming Alpha 700 successor, which it is believed will form the main Sony exhibit at photokina (Cologne, September 21st-27th). Both models have a new 15-zone AF sensor with three cross sensors, but not f/2.8 sensors – all are designed to operate at f/5.6 virtual aperture. However, there is a hidden clue that the cross sensors may be f/3.5 capable, as the high-speed shooting modes with continuous AF set f/3.5 by default on any lens capable of this (if the lens is, say, only f/5.6 then the largest aperture is always set). Setting f/3.5 implies that this confers an advantage in focus sensitivity over f/5.6, f/4 or any other particular aperture – and that f/3.2, f/2.8 or wider would bring no benefit. That points to some of the sensors having an f/3.5 virtual aperture.

The new cameras are known as SLTs – Single Lens Translucent – instead of SLR. See my intro. Did they have no English speaking staff on their team? I’m sure there is a German word which describes their mirror correctly. I’d rather have the right German word than the wrong English one. Ah well, as the bloke leaning on the pub bar says, durchsprung vor technik…

Confusing aspects – Auto HDR is said to be available in P/A/S/M modes. I guess in M mode it must leave the aperture alone and change just the shutter speed. Regular bracketing is still limited to a disappointing 3 exposures at 0.7 EV intervals, maximum.

But you’ll love the direct D-Range button which gives access to D-Range and HDR options directly, and the direct Finder/Screen button which toggles between using the very high resolution EVF with its ‘virtual 1.1X’ 100% view of the subject – effective visual scale, larger than the Alpha 700 and larger than any previous Alpha digital model except the Alpha 900 and 850. That’s one of the benefits of the EVF, a relatively tiny display is viewed through a high magnification ocular and ends up with a ‘window’ on the world which beats the tiny tunnel vision of optical finders. Technically it is very similar to the last EVF produced by Konica Minolta on the Dimage A200, with the benefit of five years’ further development. It has the same 60Hz refresh rate and visually almost raster-free RGB.

Where the A550 and its earlier stablemates vary slightly around a viewfinder with an effective 0.50X scale (relative to a full frame 100% view using a 50mm lens), the A55 and A33 provide an effective 0.73X and that’s impressive. The ocular is set well back (remember the Konica Minolta A2, and the Sony Cybershot DSC R-1?) because it is a telescope design. This also gives it a very narrow range of possible eye positions, a common feature of EVFs. The eyepoint is close, and you must position your eye precisely.

The rear screen uses the same type of (Schott?) reinforced glass with (3M?) resin gel adhesive as Canon’s 7D – this totally seals to the LCD module itself eliminating air gaps, and improves contrast. It is a technology first seen in the 7D and becoming standard across the industry though the NEX has shown Sony to have the best implementation so far. It is scratch proof, by the way, and it can be cracked by impact like any other screen.

The tilt-swivel action is borrowed directly from the Nikon D5000. In fact, it’s so identical in articulation it even included the amazingly silly front facing mode where the screen is obscured by your tripod, hanging under the camera and preventing it from being placed on a flat surface for self-portraits or videos. But it has the same benefit as the Nikon, the screen can be flipped to face the camera and protected completely while you use the EVF.

Functions familiar from the NEX including Sweep Panorama and Sweep 3D Panorama are built-in and accessed from the main mode dial, which also provides physical settings for all the main modes. Depth of field preview is restored – with the usual button – because is can now actually work. It was always useless in real terms on optical viewfinder cameras, as the focusing screen never represented wide apertures correctly.

Now, with an EVF, for the first time ever an eye-level Alpha gives absolutely perfect and precise previewing of depth of field and bokeh effects whatever aperture you are working at – even at f/1.4, which was never possible and still isn’t with the A850 or A900 for that matter (which is why their Preview mode is useful).

You can also preview the exact image appearance. By pressing the AE lock button, the auto gain of the EVF or rear screen are turned off and replaced by an exposure-compensated view. So if you dial in -1 EV (using the adjacent dedicated button), and change the WB, and use a different picture style with more saturation and contrast just pressing AE-Lock will immediately preview your image with these adjustments applied. And you can enlarge in the usual two steps to check auto or manual focus.

The finder and screen also have a Nikon-style two axis spirit level (flight simulator horizon) display to help you get your horizontals straight and your verticals parallel. It can be activated on either, and does not have to appear on both simultaneously.

For movie makers, the binaural stereo microphones are a great move. Even on the NEX, the two small top aperture mics give excellent stereo. The 33/55 mics are placed either side of the ‘prism’ housing, rather like the ears on your head. This will give the stereo image created by these cameras a really natural quality. Natural, that is, to a pygmy marmoset monkey… but still, I will wager, the best stereo image of any DSLR/HybriD. And Sony provide a stereo 3.5mm mic jack socket, though without any manual control of gain levels.

I’m sure we will have to buy the A780 to get that. Click the picture above for a big version. Who says Sony does not have a range to match Nikon or Canon, whether or lenses or of cameras? From the left, the cameras show the current range before we even see the magnesium-bodied Alpha 700 replacement arrive. A900, A850, A580, A560, A55, A33, A390, A290.

- David Kilpatrick

Read Sony Press releases and full technical data:
Alpha 33 and 55 Press Release
Alpha 560 and 580 Press Release

You can get this profile here:

http://www.photoclubalpha.com/Sony NEX-5 (Sony E 16mm F2.8) – RAW.lcp

Right click to download/save the target file, and install this in:

Library>Application Support>Adobe>Camera Raw>Lens Profiles>Sony

Uncorrected 16mm shot

Using Adobe Camera Raw 6.2 RC with the profile active at default settings

JPEG profile added (17/08/10)

I have now added a JPEG profile from the same set of images as the raw – this is lucky, I didn’t think people would need a JPEG profile but happened to have the camera set to RAW+JPEG when the test shots were made, and this has been requested for those using HDR or other JPEG-only modes.

http://www.photoclubalpha.com/NEX-5 16mm JPEG.lcp

Above: HDR three-shot with 16mm, straight JPEG

HDR shot opened in Camera Raw without adjustments, but with the Profile enabled

Using the profiles

A full Adobe Profile is undertaken at several focus distances, apertures and zoom settings (or for prime lenses, just at a range of distances and apertures). The largest chart I can print is A2+ using the Epson 3800, and with a 24mm equivalent lens, this means having the camera surprisingly close to the target. The profile is therefore only 100% correct for subjects at 115cm from the camera, which corresponds to the 4X minimum focus distance suggested by Adobe.

I have found from using the 16mm that its optimum aperture for central sharpness is probably f/5.6, and that chromatic aberration and vignetting do not improve at stops smaller than f/8. There is a slight improvement in detail sharpness in the extreme corners at f/11 and f/16, but this is due to extra depth of field helping to cover a curved focus field. I therefore made test sets at f/2.8 and f/8 for this profile.

The geometric distortion is most visible with closer subjects such as the subject above (The Slave Girl, a bronze c. 1870 by John Bell, at Cragside House in Northumberland). This is a hand-held exposure of 1/4 at f/8, and is perfectly sharp despite the lack of stabilisation; every word of the interpretation can be read at 100%. I have found most shots are perfectly sharp with the 16mm given reasonable care, as you would take with a Leica, to breathe correctly and make a shake-free exposure. This is not the case with SLRs where the mirror action nearly always causes shake.

For more distant subjects, the 100% default setting of the ACR/LR Lens Correction panel can be reduced and where there are few straight lens removed entirely to secure the maximum field of view. Similarly, the vignetting correction can be reduced or removed entirely as the natural darkening towards the corners with this lens is attractive.

Although this profile is named to match perfectly the naming convention used by Adobe for the 18-55mm, I find that ACR 6.2 can not be relied on to use it for Auto as a default (if you work with more than one lens, Adobe Lens Correction soon proves unpredictable in this anyway). If you select Auto, then select Sony, the lens profile will be selected but the Auto button changes to Custom. If you then save new Lens Correction Defaults, or Camera Raw Defaults, ACR will attempt to force this profile on the 18-55mm and the reverse will also happen. So it’s necessary to check which profile is selected. Using ‘Previous Conversion’ for shots taken on the same lens is a quick way to get there.

The additional Manual Controls can be used on top of the profile (the second tab of the interface). The most useful are the geometric distortion (camera angle) corrections. The Chromatic Aberration/Colour Fringe controls can be fine tuned as the correction for CA while very effective relates only to the tested focus distance. CA may change with focus but my particular lens doesn’t seem to suffer from this. All that is necessary is to enable Defringe All edges as a default, and this will remove any hint of colour remaining. As a tip, setting Colour Noise Reduction to a high value can help remove CA and purple fringes in many shots processed through ACR/LR. The colour NR detects 1-2 pixel fringes just the same way it detects individual pixels, and neutralises much as it does noise.

- David Kilpatrick

The prototype or dummy shown to the press in Croatia and other locations just two month ago turns out to have been little more than a rubber duck – a decoy to distract while the real thing was clearly already in production and looks very different. The real thing has an eye-level 1 megapixel-plus electronic viewfinder as well as a foldout screen, and the world’s most retro-tech microphone design.

Here is the press announcement from earlier this morning (GMT, I don’t man the computer at 6.17am but Sony’s Press Centre was wide awake and running). The guy in the Sony press pix obviously found 6.17am a bit rough, he looks worse for a long night out… he’s not even got himself in focus properly, let alone found out where he left his comb and razor…

“Camcorder Redefined” Sony unveils world’s first consumer interchangeable lens HD camcorder Handycam® NEX-VG10E captures cinematic Full HD movie and stereo sound with great depth

• 14.2 effective megapixel ExmorTM  APS HD CMOS sensor (19.5 times larger than conventional camcorder) for stunning HD movies with beautiful background defocus
• Accepts E-mount interchangeable lenses plus A-mount α DSLR lenses (via optional adaptor)
• High quality audio with Quad Capsule Spatial Array Stereo Microphone and external mic input
• 7.5cm (3 inch-type) Xtra Fine LCD and electronic viewfinder

Building on 25 years of continuous Handycam® innovation, Sony introduces the NEX-VG10E – the world’s first consumer HD camcorder with interchangeable lenses. It’s also the first Handycam® featuring an extra-large Exmor APS HD CMOS sensor that allows the creation of exquisitely cinematic background defocus effects.

Targeting video enthusiasts and photographers, the NEX-VG10E opens up unprecedented artistic possibilities not achievable with conventional consumer video cameras.

Compatible with a choice of high quality E-mount lenses, it’s the first consumer camcorder that offers the same breadth of creative expression enjoyed by DSLR photographers. Alongside the three currently available E-mount lenses, users of the NEX-VG10E can experience a wide variety of  A-mount DSLR optics by using the optional LA-EA1 mount adaptor. Picking from a choice of award-winning Sony G lenses, fixed-focal length Carl Zeiss portrait lenses and other models from macro to super-telephoto, videographers will have unprecedented freedom to explore an exciting world in movie creation.

At the heart of the NEX-VG10E is a 14.2 effective megapixel Exmor APS HD CMOS sensor that’s teamed with Sony’s powerful BIONZTM processor to capture very high resolution video and still images. Approximately 19.5 times bigger than the standard sensor found in other consumer camcorders, the APS-C sized imager also enables an extremely shallow depth of field. This allows videographers to achieve ‘cinematic’ results with beautiful background defocus (bokeh). In addition, the ability to capture DSLR-quality still images gives videographers extra shooting flexibility on assignment with less to carry.

Full HD 1920×1080 video images are captured in AVCHDTM format at up to the maximum 24 Mbps bit rate for superlative detail and clarity. Unlike many digital still cameras including DSLR that support HD video, there’s virtually no restriction on continuous shooting time. Just slip in your choice of either Memory Stick PRO DuoTM or SD media cards and capture Full HD video and JPEG still images for easy transfer into your existing PC storage and editing environment.

The NEX-VG10E comes supplied as standard with an image-stabilised E18-200mm F3.5-6.3 OSS lens that offers a powerful 11x optical zoom range. Because of its optimized design for video shooting, this high-quality E-mount lens offers smooth, ultra low noise autofocus and iris control. In-built Optical SteadyShot image stabilisation assures clearer video images when you’re shooting handheld. At wide angle settings, Active Mode enhances anti-shake performance even further, steadying jittery images even while walking. The lens also features a circular aperture for the creation of beautiful bokeh effects whether you’re shooting video or stills.

Reflecting the demands of serious videographers, sound quality matches the phenomenal imaging performance of the NEX-VG10E. The Quad Capsule Spatial Array Stereo Microphone uses advanced processing algorithms to combine signals from four separate omnidirectional microphone capsules. The result is exceptionally clear stereo audio with a highly directional response: this allows videographers to capture more sound from the subject they’re shooting, and less of distracting sounds around them. There’s also a jack for adding an optional external stereo mic, plus a headphone jack for audio monitoring.

With a photo-realistic 921k dot resolution, the 7.5cm/3 inch-type Xtra Fine LCD features TruBlackTM technology for an exceptionally detailed, high contrast view of images and menu settings. The LCD is supplemented by a high-resolution (1152k dot) electronic viewfinder that assists easy framing and monitoring. The viewfinder helps operator capture clear images in bright daylight and its angle can be easily adjusted for comfortable operation.

Despite its groundbreaking creative possibilities, the NEX-VG10E is compact, beautifully balanced and easy to handle, even for novice videographers. An intuitive jog dial and hotkeys make it easy to navigate camera menus and adjust shooting parameters. Videographers can also enjoy precise manual control over Iris, Shutter Speed, Gain and White Balance for professional results.

A range of official accessories includes the ECM-CG50 Shotgun Microphone that attaches to the camcorder’s accessory shoe. There’s also a choice of rechargeable battery options, including the NP-FV100 that provides power for up to 330 minutes continuous HD shooting. A dedicated soft carrying case LCS-VCD is also available as an option.

Offered to customers as a free download, Vegas Movie Studio HD Platinum 10 video editing software includes everything you need to produce spectacular HD movies. Powerful tools for video compositing, colour correction and sound mixing make it easy to achieve cinema-quality results in your own home studio. You can also upload movies to web, burn them to Blu-ray Disc™ or author DVDs with custom menus and graphics.

The Handycam® NEX-VG10E interchangeable lenses Full HD camcorder is available from October 2010.

Specifications are:

Model Name: NEX-VG10E
Image Sensor: APS-C type (23.4×15.6mm) Exmor APS HD CMOS sensor with RGB primary colour filters; 25P scanning
Gross Pixels: Approx.  14,600,000 pixels
Minimum Illumination: 11 lux. ( 1/25 Shutter Speed / F3.5)
Supplied Lens: SEL18200 Sony E-mount  E18-200mm F3.5-6.3 with in-lens Optical SteadyShot Active Mode
Zoom: 11x (optical, ring)
Focus: Auto/Manual (ring)
Focal length (35mm equivalent): Video mode – 32.4mm-360mm. Still photo mode – (3:2) 27mm-300mm /(16:9) 32.4mm-360mm
Shutter Speed: 1/4 – 1/4000 (video, manual control); 30 – 1/4000 (photo, manual control)
White Balance: AWB / Daylight / Shade / Cloudy / Incandescent / Fluorescent / Flash / C. Temp Filter / Custom
Recording Media: Memory Stick PRO Duo / Memory Stick PRO-HG Duo / SD / SDHC / SDXC (Class 4 or higher)
Recording Mode (AVCHD): FX (1920x1080i, 24Mbps); FH (1920x1080i, 16Mbps); HQ (1440x1080i, 9Mbps)
Still photo resolution (JPEG): 16:9 Mode; 4592×2576 (12M) /3:2 Mode; 4592×3056 (14M)
Audio Recording: Dolby Digital 2ch, via  Quad Capsule Spatial Array Stereo Microphone; External microphone input jack
LCD Monitor: 7.5cm / 3.0”-type, 921,600 dots (approx.) Xtra Fine LCD with TruBlack technology
Electronic Viewfinder: 1.1cm / 0.43”-type, 1,440K dots (approx.) Xtra Fine
Stamina: 330 min. continuous recording (with the optional NP-FV100, FH mode)
Interfaces: Accessory shoes; HDMI OUT jack; Stereo headphone jack; External stereo mic input jack; USB 2.0 (mini B / Hi-speed) jack; DC IN jack
Dimensions (D x H x W): 29.4 x 132 x 97 mm (inc. supplied lens and hood)
Weight (approx.): 1.3Kg (with SEL18200 lens, lens hood, NP-FV70 battery and Memory Stick Pro Duo)

This will have many Alpha system stalwarts saying ‘Help!’ in their own right, as they are still waiting for the predicted arrival of the real new Alphas, the 700 replacement with HD video and its 500-series sibling. What they did not expect was to find two entry-level models arriving without video, and with the changes restricted to a Tale of Peter Rabbit - they lost their buttons while squeezing under the fence to get into the point’n'shoot upgraders garden.*

But actually it’s good news, because it’s a garden full of cabbages who will appreciate the simplified interface and button layout. And they get a very high quality carrot in the form of that 14.2 megapixel sensor, as this looks to be Sony’s standard pixel count for all cameras at this level and higher. If 14.2 is entry level, a denser sensor must surely be on the way for a midrange/semipro APS-C model soon.

It’s presumably the same 14.2 megapixel CCD sensor as found in the Alpha 380, with its ISO 100-3200 range and 2.5fps continuous capture. On Dyxum’s forum, there is speculation that processing will be improved.

The 290 has a plain fixed screen, the 390 has a tilting screen and Quick AF live view (the in-prism system using phase detection). Both have chunkier and better shaped handgrips than earlier models, perhaps in reponse to criticism of ever smaller handling profiles. Thy at least have the same eyestart sensor arrangement as normal and do not copy the 450, which has the sensors above the eyepiece instead of below, and makes for a very awkward camera to use.

They keep exactly the same AF sensor, metering system, shutter, flash system and in-body SSS image stabilisation as previous models. The pop-up flash is GN10, the battery life is around 500 shots (230 in Quick AF Live View mode). The A290 weighs only 456 grams.

And the 290 has not a button in sight on top, even the shutter release and on/off switch have been shifted forward leaving a clear top panel. It’s rather like seeing Botticelli’s Venus without a navel. However, the shutter release placement of the last series was a major criticism, and this new position restores a more ‘industry standard’ placing as used by Nikon and Canon, and by Sony in the A450/500/550 series.

That rather impressively compact lens, by the way, is the 75-300mm Sony SAL seen in a neatly compressed perspective, not something new you don’t know about. And that tells us the cameras do have screw drive AF (fears in certain forums unfounded).

After asking ‘What’s NEX?’ we have the answer – mainstream Alpha DSLRs using the same software based type of virtual-controls interface as NEX, with the same level of built-in guidance for new users. All the functions of their predecessors are still there, if not so obvious camera users with experience of traditional controls.

Instead, you get ‘colourful on-screen icons’ though no claim is made in the press announcement that Sony Ericsson mobile phone designers were involved (as they were for the NEX interface). Lens options include the 18-55mm SAM and a twin lens kit with the 55-200mm SAM added.

The press and technical data does not clarify whether the card drive is the same dual format single slot used by NEX (replacing the twin slot drive SD/MS Pro Duo of earlier models) or what type of battery is used. There is no mention at all of wired cable release, but ‘Remote Commander’ remains as a feature (the infrared controller, sold separately). And there is no mention in the specifications of wireless remote flash, either, though it is included – nor of features like DRO+. There’s still an AC mains adaptor socket.

Premium features such as HDR multi-shot blending, found on the 4-5xx series, have not been added to these models.

To download a raft of high-res images of the two new Alphas and the full launch press release, click:

http://presscentre.sony.eu/content/ZipLoader.ashx?itemID=5953&Type=1&userId=8814&userLocale=2

The slight lack of info hints at a fast-track process to release details.

- DK

* I should point out that Peter Rabbit lost his buttons getting OUT of the garden, after eating too many lettuces. But Sony is clever and realises that to get INTO the consumer market garden faster, you might as well lose the buttons first. If you ever need to get out, well, you lost more than buttons…

The European press launch

David Kilpatrick recorded the proceedings at Le Meridien Lav Hotel, Split, Croatia on March 11th 2010 using a Zoom H2 portable digital recorder. Shirley Kilpatrick transcribed the audio, with subsequent editing to translate verbal output to read well as text. This is a multi-page document please use the PAGE navigation at the foot of each page to continue reading. It is a very long document.

Nick Sharples, director of corporate communications for Sony, Europe, welcomed the press to Split in Croatia, and thanked everyone for getting up before breakfast – especially those from Portugal who arrived at midnight (volcanic ash delayed their flights). The launch was synchronised round the world, hence the 8.00am timing for the European meeting.

Yoshiyuki Mogami (Vice President of Digital Imaging, Europe) was introduced to explain a little bit more about the business strategy for Digital Imaging in Europe. Yoshiyuki thanked everyone for coming over to Split; the team from Munich had arrived by driving ten hours.

Sony started Alpha business in 2006, he said, introducing the Alpha 100 in Morocco. The Alpha 700 was launched in Italy in 2007, the Alpha 900 flagship model was introduced in Scotland in 2008. “We have carried out surveys asking people in Europe which brands they would think of when buying a digital camera; the figure has risen from 50%, to close to 70%. Now we are enjoying a 15% market share in Europe. This figure is OK, but Sony now really has to go to our next step.

“But looking at the DSLR as an industry it’s not like two years ago or three years ago. DSLRs were pretty much a booming industry, and that’s why everybody came into his segment. These days the growth of this segment has very much flattened, and of course you could say this is due to economic slow down or recession, but we suspect that the traditional DSLR has a limit in mass appeal to consumers.

“So that’s why Sony can try to break this type of barrier. We put together all kinds of voices and views on this technology to see what we can do – we think we have heard the customers’ voice, and really put it into this project.”

Mogami-san introduced Toru Katsumoto, senior general manager of Alpha:

“Today I would like to officially announce our new ultracompact interchangeable lens camera we have already shown at PMA in February and in Japan. In the current market the boundaries between the three categories – DSLR, compact still camera and camcorder – are already starting to merge.

“In the area when DSLR and Digital Still Compact merge, we see great possibilities. Let me introduce to you NEX-5 (he holds up the camera, in front of large projected images of the cameras). This beautifully crafted body is designed to bring out the presence of the lens. The body is so slim and compact but without sacrificing any size or balance. The grip on this camera ensures a firm and comfortable hold despite such a slim and compact body. The rigidity and texture of magnesium alloy gives a high grade appearance and solid feel to the camera.

“NEX-3 is designed for a more casual approach, and can be very attractive especially for those who have yet to explore the world of the DSLR. The slim design comes in three different colour variations, with a unique texture on the grip. It simply feels great in one’s hand in addition to being a stylish camera.

“The key concept of NEX-5 and NEX-3 is to combine the best of both worlds – the image quality and power of expression of the DSLR, with the portability and ultra-compact design of a digital compact camera. We strongly believe that NEX-5 and NEX-3 are cameras that are capable of satisfying customers’ needs from both DSC and DSLR segments. Namely, compact digital still camera users who are motivated to step up from DSC, and DSLR users who are demanding a more compact camera without compromising DSLR power.

“Professional quality in your pocket is the buzzword for this camera. There are six elements:

• DSLR quality in still and moving images
• Compact and stylish
• Power of expression derived from interchangeable lenses
• Making creative work easier
• Beautiful high definition movies easily filmed
• High speed continuous shooting, 7fps

“The APS-C sensor successfully packs DSLR quality in a small body (he removes the lens and shows the sensor). The new sensor is significantly larger than the FourThirds sensor, resulting in a higher pixel count and superior picture quality.

“Our designers have done a great job; the philosophy is a minimalist design. The lens itself is small, but the body size is so small that the lens looks dominant overall. With the pancake lens, it comes close to the size of a point and shoot camera. It is the world’s smallest, and is lighter than either of the rival brands (Olympus and Panasonic profiles shown on screen but not named).

“The depth of the flange back on the camera is 18mm, the world’s thinnest. This is why we can make it so slim. There are three new lenses. Also conventional Alpha A-mount lenses, currently in customers’ hands, can be used via our mount adaptor.”

Katsumoto-san described the user interface with its virtual scroll wheel, adjusting depth of field; and the sweep panorama including the 3D function. “During the sweep motion, the camera generates two pictures, one for the right eye and the other for the left. You do not need two lenses for 3D.”

He said that Handycam experience had been used to set up high definition recording. Toru emphasised the value of Alpha NEX division working together with other Sony technologists.

“NEX-5 and NEX-3 are only the first two products to be offered by Sony in this emerging area. We believe that products based on the combination of a large imaging sensor and interchangeable lenses are not limited to NEX-5 and NEX-3; today, let me take the opportunity to reveal our second proposal to you briefly. As I am speaking now, a dedicated group of engineers is in the process of developing a new camcorder with the interchangeable lens system (he shows a mockup image).

“This camcorder will come with an EXMOR HD APS-C sensor for DSLR quality video in AVCHD form. Like the NEX-5 and NEX-3, with an adaptor, this new camcorder is also compatible with current Alpha lenses allowing videographers to access a wide range of high performance lenses to be used to express one’s creativity like never before.

“Needless to say, its body design is specially optimised for video shooting. Details of this product will be communicated soon, I’d say around the Autumn area, so please stay tuned. The combination of a large image sensor and interchangeable lenses can create whole new dimensions and expression and possibilities.

“To express our strength in such products, we would like to introduce the phrase “Beyond Our Eyes” which contains the following meanings – bringing new experiences, and style of unforeseen dimensions, that evoke deep emotions, and creating a visual world beyond how our eyes can see in both still photography and video.”

After this, the conference was officially over, and journalists were asked to re-convene for region specific in depth meetings. The meeting for the UK and Scandinavia was headed by Paul Genge of Sony UK. See next page.

Toru Katsumoto presents his team’s latest offering (he holds a silver NEX-3)

The entire system with accessories is to be available in June at once, no waiting for anything except the 18-200mm lens which will arrive a month later. Edit: the brochure says ‘October’ for the 18-200mm, at the presentation it was said that it would follow in a month or so. October is four months or so.

The full rollout includes – NEX-5, NEX-3, 16mm /2.8 pancake lens (NOT stabilised), 12mm wide angle and 10mm fisheye adaptors to fit this lens (£100/£120 and thus reducing the cost of w/a ownership greatly), 18-55mm f/3.5-5.6 OSS, 18-200mm f/3.5-6.3 OSS, stereo mic (no 3.5mm jack input is provided), GN7 mini flash free with each camera fits the same top thumbscrew secured accessory socket as the mic, optical viewfinder for 16mm only (£130!), and a range of bags, straps, etc plus of course spare batteries (new tiny type, £65, or bundled with aforementioned as an accessory kit for £85). The system is made in Thailand in a new Sony facility, but one fisheye converter on view was marked made in Japan.

While both use a new 14.2 megapixel sensor based on the live-view capable CMOS of the Alpha 550 and 450 DSLRs, the NEX-3 is wired to record 720p HD MPEG4 video only. The NEX-5′s main selling point to justify a higher price is 1080i HD video. It uses the AVCHD recording format, which is considered the most professional standard for consumer HD video crossing into TV and film potential uses, but also widely reviled for its incompatibility with many software players. However, NEX-5 also has an optional 1440 x 1080 MPEG4 mode which remains to be tested for the quality of HD it produces (it is a ‘stretched pixel’ mode not a cropped format).

They also offer recording to both SDHC and MemoryStick Duo Pro cards, but it remains to be seen exactly what cards they are truly compatible with; Paul Genge said ‘any modern card’ for recording time to a maximum of 29 minutes 1080i HD (more for other formats). Sony’s brochure says SD Class 4 or better. Canon claimed Class 6 SDHC cards would work with the EOS 550D/Ti2, but buyers quickly found hardly any Class 6 cards were reliable. The 1080p Canon HD video stream actually demands the best cards you can get, Class 10 SDHC.

There is no electronic viewfinder in the range on launch, composition is entirely on the new TruBlack 3 inch screen which is a match for the A550 in articulation but 55% brighter and with much higher contrast and a glass surface.

For the buyer, the body will immediately impress as it is ultra-slim, and it will easy for salesmen to remove lenses and actually show that the sensor is much bigger than the Micro FourThirds models from Olympus and Panasonic. The new Sony NEX system lenses use silent ultrasonic focusing motors and an electronically adjusted aperture. They also incorporate equaly silent floating group in-lens image stabilisation for the two zooms, with 10X efficiency Active Mode on the ‘sports and travel’ 18-200mm.

Everything from the body to the lens is communicated electronically – there are no mechanical links, and the lenses are designed to make no significant noise at all when focusin during video shooting. This is the big selling point of the NEX models; because the system has been entirely designed after the concept of V-DSLRs appeared, and is only marginally connected to an existing SLR system, no baggage has been hauled in to the design.

Click this picture for a Level 9 JPEG saved from a FULL SIZE NEX5 fine quality in-camera JPEG, taken at ISO 200, 1/8th, with the 16mm lens – the evening dinner for the European press at the Ivan Mestrovic museum-gallery in Split. Camera held on a wall for stability.

Even so, the NEX bodies will be able to operate with certain Sony lenses (or Minolta AF fit lenses). I took along both screw drive (11-18mm, 16-80mm) and in-lens motor (SAM 30mm and Sony G 70-300mm SSM) Alpha lenses in case there were adaptors to hand. The only one was a prototype – and Paul Genge said that despite all efforts, the plan to make SSM and SAM lenses work on the Alpha adapto LA-EA1 with AF confirmation had not been possible. At launch, Alpha lenses can be used with manual focus only but with aperture control possible, and full EXIF data transmission.

The NEX-5 is magnesium alloy, the NEX-3 is polycarbonate and not so elegant. The lenses used machined aluminium bright silver and matt black ‘zebra’ design, mostly silver. The lens mount is a bayonet, slightly smaller than Alpha with a mere 18mm back focus. The dual card format slot is a single, auto sensing slot not two slots.

Both cameras shoot 2.3fps with full AE and AF (25-zone full sensor area selectable points or wide zone), 7fps in speed priority mode (preset focus and exposure). They have a true high resolution sweep pan based on multiple still frames, not a video capture, which can produce JPEGs up 23 megapixels with incredible sharpness and quality (220 degree pan). There is also a video-based 3D Sweep Pan mode creating 3D Bravia compatible scrollable stereo images.

Face detection and Smile Shutter are built in; the screen is not a touch screen, but uses a clever new interface combining elements learned from mobile phone design with traditional scroll wheel and button control. An 80-subject user guide with comparison images is built in as an eBook which also pops up selected subjects as Tips. Full conventional control is also provided.

HDR uses 3 frames, and manul control allows up to 6EV difference (plus or minus 3EV) to create in-camera HDR merges. RAW shooting, RAW+JPEG, and the usual still modes are covered and the file format is ARW2.2 similar to current APS-C Sony Alpha DSLRs.

Paul Genge confirmed that the next generation of Alpha DSLR bodies would follow the NEX-3/5 and use the same video and BIONZ, but from his comments about the problems getting SAM/SSM lenses to work with contrast-detect AF, perhaps not the same AF option with live view. We shall see.

A new camcorder, similar to a HandyCam in design, will be launched in October featuring the NEX mount and lenses and adaptable to the A-system lenses. This is a definite statement, along with a firm commitment to develop the DSLR Alpha system and that the next generation of Alpha bodies will have the same video capabilities as the NEX models.

Here is the camcorder on display in proto-mockup form with NEX lenses and the E to A mount adaptor.

- David Kilpatrick

The latest news is that Tokina is to introduce the 11-16mm ƒ2.8 in Sony Alpha mount. Tokina stopped making Minolta mount lenses shortly before their parent company Hoya acquired Pentax. The Tokina factory has been producing Pentax lenses (not all of them) and also the Schneider-Kreuznach branded range for the Samsung GX Pentax clone DSLR system.

Now that Samsung has gone its own way with the N-system, abandoning Sony sensors and Pentax lenses, some of the conflicts which possibly inhibited Tokina from returning to the Alpha mount have disappeared – and some of the capacity and market share taken up by their Samsung contract likewise. Alpha lenses will fill the gap nicely.

Sony must, surely, have observed that the Tokina 11-16mm ƒ2.8 is not just the best such wide-angle currently made. It’s also the only one which activates the ƒ2.8 central double cross sensor of the Alpha 700 properly, doubling the focus accuracy which is critical with such short lenses. Depth of field may be huge, but depth of focus (the tolerance at the sensor plane) is not. Calibration needs to be perfect with lenses like this. The 11-16mm could be a perfect match for the next generation of Sony 700-level camera with one or more ƒ2.8-capable AF focus points.

Tokina has made lenses for the Alpha system in the past. They designed, and produced exclusively for Minolta, the 100-400mm ƒ4.5-6.3 APO AF lens. They made one variant of the 28-80mm ƒ3.5-5.6 kit lens, regarded as the best optically. It is possible that Tokina also designed the 100-300mm ƒ4.5-5.6 APO (D) and one or more of its predecessors, whether delivered to Minolta in element form for assembly or not. I would also suspect that odd and much acclaimed one-off, the 35-200mm ƒ4.5-5.6 Xi Power Zoom, of origins outside Minolta. Tokina would be the most likely source.

So it is not out of the question that Hoya/Tokina is once again involved in working with the Alpha system, this time with new owners Sony. The 11-16mm might perhaps even appear in a Sony guise. After all, Tamron has been allowed to continue selling Alpha mount 11-18mms despite making a Sony branded version. Why should Tokina not be able to market their own, while also creating a Sony SSM or SAM version?

I was able to test the Tokina 11-16mm on a Nikon D90 (same basic sensor as the A700, A500 in terms of resolution and physical size) thanks to professional photographer David Bryce, during a seminar held in Scotland in Autumn 2008.

The brief test

David Bryce was one of the first to obtain a Tokina 11-16mm ƒ2.8 zoom, and I had a chance to take a good look at it during a Master Photographers Association Scottish Region seminar in 2008. In addition to trying it out on the Nikon D90 with architectural subjects (the venue, Solsgirth House) I was able to make some full aperture and ƒ4 tests of no pictorial merit, positioning details in the corners to check out how well it performs. If you click on most of the images, you will be able to access full size 12 megapixel files.

Here’s the subject – using converging verticals and a very close viewpoint, at f/9 and 11mm, in nice sunny conditions. The sun kindly disappeared for the straight-on tests of wide open and f/4 performance.

11mm at f/2.8

16mm at f/2.8

11mm at f/4

16mm at f/4

There was some sign of softness in the corners which was not fully removed even by ƒ11. What was surprising was the relative lack of vignetting – even at ƒ2.8, the corners were well illuminated. Performance on Canon’s 1.6X sensor (substantially smaller than the Nikon 1.5X sensor) will appear a little better as the extreme corners are not included.

Uncorrected at 11mm (click image for a larger, but not full size, view)

Corrected in Photoshop (Distortion>Lens Correction) with 3% de-barrelling

The lens turns out to have very good flare resistance, and better geometry than might be expected, needing only 3% correction for pure barrel distortion at 11mm. On most distant subjects, or buildings photographed to allow convergence rather than correct the verticals no correction is really needed.

Compared to Nikon’s 18-105mm VR lens, the Tokina had higher contrast and produced a more punchy image. Both lenses at their widest needed a similar CA correction in Adobe Camera Raw of around -30 Red/Cyan defringeing, and the Nikon showed more vignetting. On revisiting the files, I found the Tokina could survive with -20 CA correction and was generally cleaner than the 18-105mm. I’ve since bought an 18-105mm VR Nikkor myself and can confirm it’s a modest performer optically, but cheap.

16mm at minimum focus, f/8, into the light with a very bright sky

Close focus was impressive, more useful at 16mm than 11mm, with not too much field curvature or corner sharpness loss. The close-focus shot also shows pretty good bokeh, and being taken directly into the light, well controlled internal reflections with no veiling glare over the shadows.

For most medium and long distance subjects, full aperture would not produce an acceptable print. The 35mm shaped frame would need to be cropped to 10 x 8 shape to lose unsharp zones at the ends of the shot. The centre, even wide open, is exceptionally sharp. At ƒ4 there is a small improvement but not enough to make the full frame useful.

Interior at f/8, 1/30th. The Nikon D90 has no sensor stabilisation and the Tokina also has no IS/VR. You can see the degree of barrel distortion present at the frame end (the example above shows it on the long side, this displays it on the short side. The good news is that although it is strong barrel, it is simple, not moustache-shaped wave form distortion. This means a simple correction can fix it, no need for a lens geometry map.

By ƒ8 sharpness is good across the frame bar the extreme corners; these may demand ƒ11, an aperture which now begins the soften the whole frame as a result of diffraction. Even so, for architectural or industrial shots, ƒ11 would be a suggested setting to get corner to corner sharpness at 11mm. With the right subject and precise focusing, wider apertures may produce perfect results, as the very ordinary shot below shows.

Normally, I either wouldn’t put up an image with a badly angled composition and poor lighting like the one above – at the least it would be cropped and straightened. However, this particular shot at f/7.1 and 11mm must have been optimally focused (I’d guess, on the gravel not the house) and shows what the Tokina can do when the depth of field is adequate. The grass is sharp pretty much to the extreme corner. Click to view the full size file.

The centre to edge difference at full aperture is emphasised by the unusually high resolution on-axis. The ƒ2.8 aperture enables extra accurate focusing with most DSLRs including the D90, and this really pays off in terms of micro-contrast and detail.

We do not yet know how Sony will tackle the problem of ensuring accurate AF with rising resolution values. It is a more complex subject than I thought possible, with everything from the focal length and aperture to the design parameters of each lens affecting accuracy. AF point (front or back focus) even changes with temperature, more so for outer field sensors than the central point. The Canon 1D MkIV has a temperature sensor in its AF module to apply recalibration on the fly and correct for the differential expansion of silicon and glass components of the AF array within its working temperature range.

There is one surefire way to get perfect wide angle focus – contrast detect focusing from the imaging sensor itself, or for Alpha system owners (so far), Manual Focus Check Live View on the Alpha 550 and 500. The Tokina 11-16mm will be perfect for this method as the wide aperture will show the correct focus point clearly.

– David Kilpatrick

The Alpha System celebrates its Silver Jubilee or 25th Anniversary this month – though left uncelebrated by the inheritors of the Minolta AF legacy, Sony. They have no reason to draw fresh attention to the age of the system, as in four years they have taken it the same sort of distance that Minolta took the world’s first AF system in the late 1980s.

It’s not only Alpha’s 25th birthday. This is also the 25th birthday of modern AF SLR systems – all of them!

This is a multi-page article. See the links at the bottom of the page to Continue Reading after each page.

For Photoclubalpha and the historic Minolta Club of Great Britain, the anniversary does matter. A good many of you out there have been members since the launch of the system, often using the earlier SR and X manual focus systems before that. We still have a 1985 Minolta 7000AF and it’s still working just as it did when new.

25 years before the first Minolta SLRs appeared – a folding Minolta Six of 1935

I don’t mind showing my age to make a comparison. I was 11 in 1963 when I took my first pictures with an SLR camera. My father had bought himself a Pentax S3 – and the camera it replaced was 25 years old, a pre-war Zeiss Ikon Kolibri collapsible 16-on-127 model.

When the Kolibri was made, 127 was the ‘vest pocket’ format of choice. 35mm was on the rise, but 35mm SLRs had not yet arrived. They were as much a thing of the future as digital SLRs were when the Minolta 7000AF was launched.

But within that 25 years, there was hardly a single camera system made with interchangeable lenses that did not become obsolete. Only the ‘frozen assets’ of the cold war kept some systems, like the Exakta bayonet and the Praktina, alive. New brands were launched, from the British Wrayflex and Periflex to the Italian Rectaflex and many German oddities. It was not unusual for an entire system to be come and gone within a few years.

Even in the following quarter-century, the high years of the Japanese 35mm SLR, the succession of lens mount changes was bewildering. Independent lens makers like Tamron and Sigma were forced to make systems using interchangeable mounts not just because the public wanted it. A dozen or more mounts were made for every lens and in the 42mm screw thread fit alone there were endless variants – Praktica LLC (Pentacon Electric), Olympus FTL, Pentax ES and more.

It was more or less a 25-year cycle – the SR system was announced in 1958, and really got underway by 1960. It was to be another quarter century before the AF system arrived. We are now a further 25 years on – can we expect a totally new camera system, once again, in 2010?

Minolta’s SR bayonet mount, introduced in 1958/9, actually remained basically unchanged all the way through to 2005 when the last manual focus model, the X-370S, was available. It survives even now as a mount popular in China where the Seagull range from Shanghai Optical includes Minolta fit models. That mount only ever had one major revision, to add a linkage for open aperture TTL metering. The introduction of programmed exposure and shutter priority was cleverly enabled by using the existing design of lens mechanism and improving its accuracy, while adding a simple reference lug to the ƒ-stop setting ring.

Nikon’s 1959 F-mount proved similarly easy to improve without any basic modification. Both these bayonet mounts celebrated half a century of production in 2008/9 – another landmark, which Nikon was able to celebrate but Minolta of course could not.

Full-frame DSLR shooting for a wider audience
New Sony Alpha α850 with 24.6 megapixels and pro-style features

* Full-frame 24.6 effective megapixel Exmor™ CMOS sensor and dual BIONZ processors for detail-packed, low-noise images with high sensitivity up to ISO 6400 (with expanded ISO range)
* Bright optical glass pentaprism viewfinder with 98% coverage
* SteadyShot INSIDE™ offers up to 4.0 steps anti-shake performance with all lenses
* Photo quality (921k dot) 3.0-inch Xtra Fine LCD
* Fast, high-accuracy 9-point AF with 10 focus assist points

The new DSLR-α850 from Sony offers serious photo enthusiasts a  compelling step up to the creative possibilities of full-frame imaging.

Ruggedly built for unflinching pro-style handling and performance, the α850 shares the same 24.6 megapixel sensor and virtually all features of the flagship DSLR-α900, introduced last year. Like its full-frame sibling, the α850 fully exploits the creative possibilities of the α family of lenses that includes premium full-frame optics from Carl Zeiss, plus five high-performance G Lens models.

At the heart of the α850 is a full frame 24.6 effective megapixel Exmor™ CMOS sensor that captures flawless, detail-packed images with vibrant, lifelike colours and fine textures.

The purity of high-resolution image data captured by the full-frame sensor is optimised by two-stage noise reduction in both analogue and digital domains. Noise reduction is first applied as the full-frame sensor converts light to electronic signals. Dual BIONZ™ image engines process large amounts of digital data, applying finely-tuned noise reduction during image processing to deliver pictures with extremely high level of sharpness and minimal noise level. This combination of high native sensor resolution and powerful noise control techniques ensures superlative image quality, even at high sensitivity settings up to a maximum ISO 6400 (with expanded ISO range).

The camera’s optical glass pentaprism viewfinder aids accurate shot composition, offering an extremely bright view with minimal distortion and an approximate 98% field coverage.

Serious enthusiasts will also prize the camera’s fast, high-accuracy autofocus system that provides excellent framing freedom while making it easier to achieve optimum focus with moving subjects. The 9-point AF system is supplemented by 10 focus assist points to assist subject detection, improved out-of-focus detection to reduce focus hunting and a dedicated f/2.8 sensor for enhanced AF accuracy with wide aperture lenses.

Shots can be viewed on the large, high contrast 3.0-inch Xtra Fine LCD that offers an exceptionally high  resolution (921k dot) for critical evaluation – even outdoors or in bright ambient light.

For greater creative control, an Intelligent Preview function indicates the effects of exposure, white balance, and D-Range Optimiser adjustments prior to shooting. This Preview is invaluable when composing complex scenes that may typically combine multiple light sources with different colour temperatures.

Touching the Fn button switches the display to Quick Navi mode, allowing convenient one-handed adjustment of key shooting parameters. A secondary backlit LCD panel on the top of the camera body gives useful confirmation of major settings, even when the main LCD is turned off.

In common with all other DSLR cameras from Sony, the α850 features SteadyShot INSIDE™. This in-body optical stabilisation system delivers up to 4 steps of anti-shake correction with all compatible lenses, opening up even greater creative possibilities when shooting handheld.

Like its full-frame sibling, the α850 is ruggedly built for dependable performance in gruelling conditions with a high-tensile aluminium chassis and all-magnesium alloy body shell. Viewfinder, card slots, controls and other sensitive areas are protected from dust and moisture by rubber seals. In addition, an anti-dust system guards the full-frame sensor from the effects of dust entering the body during lens exchange.

The supplied high-capacity InfoLITHIUM™ rechargeable Battery Pack (NP-FM500H) delivers power for up to 880 shots (approx.) per charge. Battery levels can be monitored in precise 1% increments, eliminating uncertainty about remaining shooting time.

The camera can be connected to your BRAVIA™ or any HD TV (requires optional HDMI cable) for a big-screen view of your shots. On-screen image quality is optimised for superbly lifelike reproduction on BRAVIA™ models supporting PhotoTV HD. On-screen playback can be controlled via an optional wireless remote commander (RMT-DSLR1).

The α850 is fully compatible with the range of official accessories by Sony for the flagship A900.

The choice of full-frame lenses to complement the α850 is enhanced with the new 28-75mm f/2.8 SAM. This compact, easy-to-carry lens is ideal for photo enthusiasts looking to add a bright, general purpose zoom to their collection of full-frame optics. Delivering excellent imaging quality, this zoom offers a wide f/2.8 aperture. Ideal for day-to-day shooting tasks, its bright maximum aperture makes the 28-75mm F2.8 SAM particularly valuable for interior scenes and available-light portraits.

Also, with Memory Stick™ at the heart of the Sony alpha, you have every advantage. The advanced Memory Stick PRO-HG Duo HX (4GB, 8GB, 16GB or 32GB) is the perfect tool for continuous shooting mode, with the ideal combination of massive storage capacity and blisteringly fast operation. Memory Stick PRO-HG Duo HX 32GB will never miss the key shot because the number of pictures taken in 1 min is approx 160* photos (in RAW+JPEG/L (24M)).

Delivered with USB Adaptor, Memory Stick PRO-HG Duo HX 32GB is ideal for users who want to transfer data in high speed: approx. 660[1] pictures in L (24M) size at RAW+JPEG mode in 26 minutes.

The DSLR-α850 full-frame digital SLR camera is available from September 2009 and the 28-75mm lens will be available from November 2009.

Specification table follows on the next page.

So, here is the size difference. You can see the scruffy Sony rubber grip, but that brand new Sigma with even the a few days’ handling also picks up dirt. You are looking at a lens with a 72mm filter versus 62mm for the Sony, and it feels far bigger in the hand or on the camera. The zoom action is also pretty stiff if the lens is opposing gravity – trying to zoom in while tracking an aircraft or bird in the air above you needs a strong twist, as does zooming back if you are aiming down from a high viewpoint. However, the Sigma on the level has a good feel. I just wonder what time will do to the mechanism. The zoom lock only works at 18mm, as expected. It is positioned very close to the AF/MF switch which in turn is above the Optical Stabiliser on/off switch. With the camera to the eye, I sometimes operated either one of these when trying to hit the zoom lock release, most often the AF/MF switch.

Although the Sigma is HSM, do not confuse this HSM with the version found in the 70-200mm f/2.8 Sigma, or with Sony SSM. The focusing ring moves, to start with, and has no direct manual focus over-ride. To use manual focus you must switch the lens from AF to MF using the lens switch, not the switch on the camera body, or indeed the AF/MF toggle-hold button. All body controls for auto or manual focus are disabled and you can not turn the focus ring on the lens unless you switch to MF on the lens itself.

It is similar in operation to Sony SAM though the HSM motor is in a different class to whatever Sony has chosen put inside their SAM lenses. Focusing is moderate in speed for long travel (a typical HSM thing) but very fast indeed for tiny incremental adjustments. It is quiet as well. I would not swear that the Sigma is faster than the Sony with its mechanical drive, but it is much smoother in use. It certain gives the impression of being faster, and focusing is extremely accurate on our A700, A350 and A380 bodies alike. The focusing ring only needs about one-eighth of a turn from ‘beyond infinity’ to the closest (45cm, 18″) setting. The zoom ring uses a quarter turn and is well marked from 18 to 135mm with focal lengths 18, 24, 28, 35, 50, 80 and 135. Between 135 and 250mm there’s barely 15mm of scale and attempts to set a guessed focal length like 200mm could be wildly inaccurate.

Apertures appear to be f/3.5 until just under 24mm, f/4 from 24 to 35mm, f/4.5 to around 48mm,  f/5 from 50mm to 75mm,  f/5.6 from 80 to 135mm, and from then on f/6.3. These are not sudden jumps, of course, just the closest the camera can report to a continuous change in maximum aperture. This is a good result, especially at the wide end where having a true f/3.5 from 18mm to 23mm is unusual.

The lens itself comes with a petal hood, good quality front and rear caps, but no case. Why would you need one? This lens, if you buy it, will live on the camera all the time. The lens hood will reverse on to the lens, but should always be fitted properly for shooting. This complex zoom is no more flare-prone than any other, but it does have a very large front element which is not recessed.

When collapsed to 18mm, ideally locked to prevent zoom creep wearing the mechanism out prematurely, it’s a chunky but reasonably compact lens, comparable in size to the CZ 135mm f/1.8 or 24-70mm f/2.8 zooms for the Alpha system.

You can see here that even on the Alpha 700 body, not a compact design, the Sigma can also be an impressive weapon – perhaps attracting the wrong attention from security guards, community police, concert and sports venue staff or parents convinced you are the bogey-man or bogey-woman. Extended, it is as large as the Sigma 70-200mm (which does not change size). The double extension is very firm and not wobbly in the slightest – this is a well made lens, very solid with a metal mount.

Lens Construction – 18 Elements in 14 Groups
Angle if View (1.5X Format) – 78.5 – 6.5 degrees
Number of Diaphragm Blades – 7 Blades
Minimum Aperture – f/22 to f/40
Minimum Focusing Distance – 45cm
Maximum Magnification – 1:3.4
Filter Size – 72mm
Dimensions – Diameter 79mm x Length 101mm
Weight – 630g
SRP – £559.99