• Improved response times (no more “processing” message while waiting for display of pictures, faster power-off, faster dial response times)
• Shading and aberration compensation now available on the following lenses:
  • SAL-24F20Z (Carl Zeiss)
  • SAL-85F14Z (Carl Zeiss)
  • SAL-135F18Z (Carl Zeiss)
  • SAL-70300G (G Lens)
  • SAL-35F18
  • SAL-50F18
• Faster and more precise AF

All details from Sony.

• A77 firmware (for PC)
• A77 firmware (for MAC)
• A65 firmware (for PC)
• A65 firmware (for MAC)

Sony A65 & A77 EVF - Copyright (C) Sébastien ORTEGA-DUBOIS - All rights reserved

Sony A65 & A77 front - Copyright (C) Sébastien ORTEGA-DUBOIS - All rights reserved

Sony A65 & A77 back - Copyright (C) Sébastien ORTEGA-DUBOIS - All rights reserved

It may help better understand the differences justifying the very large price gap between the two models (for the same digital sensor).

Pictures coming from a partnership with Sébastien Ortega-Dubois who gives more detailed differences in a comparison of Sony SLT-A77, Sony SLT-A65 and Sony Alpha 55.

The most recent release of Capture One (version 6.3) now supports the new RAW files grnerated by the most recent Sony products using the huge 24 MP sensor:

• Sony Alpha 77
• Sony Alpha 65
• Sony NEX-7
• Sony NEX-5n

We should also list the support for the most recent Olympus:

• Olympus E-P3
• Olympus E-PL3

What is an EVF?

EVF = Electronic View Finder.

Be ready to see this term used more and more, even for SLR cameras. Many a compact point-and-shoot photo camera already is equipped with an EVF, but it is most common in video cameras (and it has been for many years already). In the viewfinder, instead of looking at an image coming from a more or less complex optical system, your eye is pointed at a small LCD screen (or TFT, or OLED or whatever similar technology) reproducing the picture recorded by the CMOS imaging sensor of the camera.

After all, this is only what we already know well as the LiveView mode on the back LCD of nearly all the compact photo cameras (and many SLR too). But as a small picture in the viewfinder.

An LCD display + a viewing lens = an EVF.

In some case, you could add a small mirror for space reasons, but this is a minor variation to the original tune.

EVF and Single Lens Reflex (SLR) cameras

SLR viewfinder

A Single Lens Reflex (SLR) photo camera is organized around a very mature technology in which a mirror reflects the image through an eyepiece via a pentaprism (or a penta-mirror) as in the drawing on the left.

Of course, as the film (film plane and focal plane shutter) is hidden by the mirror, this one must be drawn up to take the snapshot.

All this is greatly simplified when there is an electronic viewfinder.

Advantages and drawbacks

Advantages et gains from an electronic viewfinder

The first positive side is mechanical and optical: If you remove the mirror and the pentaprism, the architecture of the camera will be greatly streamlined, lightened and its manufacturing cost will go down. For three different reasons (at least):

• reduction of the number of parts
• reduction of the assembly complexity (or of the amount of human work needed)
• increased ease of calibration (alignment) of the optical parts (an LCD and an eyepiece, rather than a whole bunch of parts)

Even better, the disappearance of a huge articulated and mobile mechanical system brings several positive effects:

• increase of the continuous shooting speed/cadence (there’s so much less hardware to move around for a photo)
• reduction of shutter noise (in a traditional SLR camera, most of the noise actually comes from the mirror up-swing and the shutter operation; It’s worth removing one of them)
• a lighter mechanical structure through reduction of the quantity of parts and since the enclosure is lighter because it has less stress to sustain in all these shocks and moves

Also, the electronic viewfinder exactly reproduces what the sensor sees. A 100% optical coverage on a viewfinder of fully optical design has always been reserved to the most expensive SLR cameras. But when you get an EVF, 100% coverage is totally natural and effortless. Luxury comes to you in the clothes (and price) of entry level.

Then, having an LCD display brings the additional possibility of adding all the data you can think of. Many brands already experimented with this and brought us some Electronic Viewfinders with features like:

• Histogram
• Artificial Horizon
• Zoom on a part of the image
• Telltales and technical displays (aperture, speed, ISO, etc.)
• Active AF zones (including face detection)

Fuji	Fuji X100
Sony Alpha SLT-A77

As a matter of fact, there is no other limit than what a computer screen can display: Data, image, etc. It’s only a choice from the designer.

And it’s not even the end of it. The EVF also has a major advantage when light is low: As far as the sensor can see something, it’s only a matter of amplifying light signal (like for the ISO sensitivity selection) to make the picture readable. If the photo is possible (even barely possible), showing it is possible. Think about it! A nikon D3s digital sensor could display what it sees even in the darkest dawn it can manage. Since the digital noise is only a marginal issue on an LCD display (even at 3MP resolution), you can see what the sensor will be able to grab even in a room too dark for comfortable framing with an optical viewfinder.

If you compare it with the lowest-priced optical viewfinders of entry-level SLR cameras, the EVF is an easy winner in those low-light conditions: These simple viewfinders where already unpleasant and dark, the EVF bring a new life to cameras used indoors.

Drawbacks and limitations of the electronic viewfinder

But all is not pink and shiny. EVF have the same problems as most point-and-shoot cameras find on the rear-side LCD displays used for LiveView.

To start with, even if the electronic viewfinder (EVF) is intrinsically better protected against sunlight, it is still very sensitive to bright light issues. If there was only one thing that the EVF-sensor pair does not like, this would be high lights and bright sun (sic!) highlights are easily washed white and overblown. You will find more white flat areas than nice clear zones. The worst comes when you add high contrast to the picture. The EVF has a very small dynamic range (this is not HDR!) and the designer must choose between high-lights and dark areas.

We tend to forget it, but the human eye is amazingly sensitive and adaptable. Behind a prism and a mirror, in the brightest mid-day sun light, it can marvelously adapt to over-exposure situations that totally saturate the purely digital EVF system.

Best (or worse), the eye is extraordinarily able to switch within a few hundredth of seconds from the darkest night to the most violent lighting without even thinking about the marvelous brain processes involved. On the contrary, the EVF system uses a gain correction which will change at any time the apparent brightness to track the actual scene brightness. What is clearly an advantage in a dark room, forces the system to include an auto-adaptation feature which will change the brightness of the EVF several times per second. According to what you point the camera to, the electronic viewfinder will change from lighter to darker display. Not really a problem, but this asks for some tolerance to a process which is not natural to our human eyes. You have to get used to it.

Additionally, but this is all very sensitive to the user (you!), watching a computer screen may be more or less comfortable in the long run. As a matter of fact, if you use the EVF for long hours (this is the case for the professional photographer waiting in front of the Cannes Festival stairs, for the photo safari amateur or for the intensive tourist photographer willing to bring everything on a memory card – don’t laugh, I’m sure you shoot it as much as I do), you may come back with a serious headache. This is certainly not an issue for everybody (and you’re not supposed to keep the camera to your eye if you want to immerse yourself in your subject), but this may become a real limitation to some people. At the strict minimum, you must take very seriously the setting up of the dioptric correction of the eyepiece (much more seriously than on your current camera) to limit the impact to a tolerable level. Unfortunately, the eye seems to get more prone to this issue when the photographers gets older… Our eyes are not equal in front of photo gear. Too bad, but true.

Sony Alpha : miroir semi-transparent et EVF

Last but not least, even if the electronic viewfinders improve in time (and Sony has shaken the market with a 2.3-million-pixel EVF in the Sony SLT-A65 and in the Sony SLT-A77 which has raised the bar to a whole new level for all the competition), the fine quality of a focusing screen in a common optical viewfinder stays incomparably better than what the best EVF can display today. Far better! This is the reason why they generally include an additional Zoom feature allowing to better judge focus through enlarging an area (On the opposite, a company like Zacuto proposes an enhanced edge sharpening to make the focus analysis easier or more natural).

If you let your camera focus for you, honestly, you shouldn’t care much about this. If you like to fine-focus your pictures (all the more if you use a USM, SSM or similar lens which allows easy manual focus correction), if you use wide-aperture lenses (which call for a very attentive selection of the focus location or AF area), you will be in a living hell playing with buttons to merely focus while you were used to just looking at the image in your old optical viewfinder. Interestingly, Sony keeping in its technological portfolio the marvelous AcuteMate focusing glass surface (bought from Minolta and still widely considered as the absolute best here), is the first to jump to the next technology.

While we talking about AF, we must stop and remind ourselves that the disappearance of the reflex mirror means that focusing is now done from the data directly available on the image sensor. Where the traditional SLR camera focuses just before the exposure, using phase difference sensors (high precision, high speed, and not very complicated), the EVF viewfinder seems to enforce the use of automatic focusing using the measurement of a contrast difference directly on the image (very consuming in terms of processor power, intrinsically less reactive). Sony, once again at the forefront, chose to insert a semi-transparent mirror to keep the fast phase detection sensors. But they are quite alone in this decision – for now.

(Temporary?) conclusion

The electronic viewfinder is no panacea. But it brings good answers to tough questions asked by the old reflex technology, starting with price reduction for the digital photo cameras which is always a major issue for the manufacturers.

The camera owners already used to the optical viewfinder of entry-level cameras will immediately recognize the many advantages and all the more if they are occasional photographers or if they come from the compact point-and-shoot camera world.

Expert users (not even pros) will certainly have more mixed feelings, even if the most advanced electronic viewfinders like the recent Sony ones progressed in great strides. As I read in one of the recent articles about these new photo cameras, Sony brought enormous (not incremental) progress but this is still an electronic viewfinder. Not perfect, but with enough advantages to balance the drawbacks.

Now, you may have to read the post again to choose which ones are the most important for you. But there is a big problem left: We usually choose our photo camera inside a relatively dark shop (perfect, ideal conditions to demonstrate an EVF) and we use it mostly during our Summer holidays (the worst conditions to use an EVF). Some people may be unpleasantly surprised if they do not think twice before choosing a camera.

But this is a very difficult exercise. All the more difficult because nobody has final production cameras to test and review (they will only exist at the end of September and won’t be sold before next October). Imaging Resource demonstrates this with good test pictures (or is it sample images?) shot in very good conditions (As a matter of fact, others like Luminous Landscape, chose not to show any image) but they create some doubt about the exact quality that can be expected from these photo cameras (The Alpha 77 is tested, but everybody understands that the Alpha 65 will certainly provide nearly identical images from the same digital sensor).

I want to believe that today’s tests will be done again by the same bloggers with production cameras (and mostly with the final firmware). Nevertheless, the owners of the early Alpha 700 will probably remember that Sony is sometimes capable of waiting months after the start of production to provide “the right firmware” for a DSLR photo camera.

Sources:

• FotoMagazin: Good quality images showing the great pixel resolution, nice ISO 400 pics, well balanced ISO 800 pics, ISO 1600 are cleaned soft and then accentuated too much to compensate, ISO 3200 pics are astonishingly good for this level of sensitivity even if they should be rated medium/OK only.
• Imaging Resource: Nice resolution, a bit too accentuated up to 400 ISO (ISO 800 JPEG files are not too bad, though), JPEG files are seriously deteriorated by too much smoothing at ISO 1600 (viewed at 100% it looks a bit cartoon-like), violent smoothing a ISO 3200; ISO 6400 files are really too far out to be used as anything other than “holiday souvenirs” in low resolution (smoothed, accentuated, with too many artifacts to be pleasantly viewable at 100%).
• ePhotozine: Pictures hinting at too much accentuation at ISO 1600, but the shooting was not good enough to judge anything seriously.
• QueSabesDe.com: Nice pictures from Sony not allowing quality judgments (more spectacular splash than test fodder)

See also sony sample pictures:

• for the Sony Alpha SLT-A77
• for the Sony Alpha SLT-A65

• Sony Alpha SLT-A77
• Sony Alpha SLT-A65

Important notice: The comparison table (with the competing Canon and Nikon products) has been updated.

Sony Alpha SLT-A77

The good news:

• The digital sensor is 24.3 Mega-pixel
• Sensitivity hit a new high for this price range (ISO 100-16000 plus extensions)
• Exposure/metering is controlled by a new 1200-zone sensor, as expected
• Video capture takes off up to 60 frames/s in Full HD (1080p)!
• Fast continuous AF is maintained at all shooting speeds (12fps for the SLT-A77 and 10fps for the SLT-A65) and during video grabbing, thanks to the semi-transparent mirror
• The Alpha 77 has AF micro-corrections (like the Nikon D7000, D300S or Canon EOS 7D)
• The pop-up flash is really 12m at 100 ISO (initially, we heard less than that)
• The Alpha 77 body is all-weather, dust- and moisture-protected, not only in magnesium allow. This will be a tough guy.
• The Alpha 77 shutter is guaranteed for more the 150,000 operations, which is nearly in the full-pro quality level in terms of reliability
• The Alpha 65 is only 622g (thanks to a lot of polycarbonate)

The less good news:

• The rumor told that the Electronic Viewfinder would be 3 mega-pixel resolution OLED. But it will have only 2.3 MP, which is still clearly in the high-end of the EVF quality.
• The Alpha 77 still is heavy at 732g

This announcement is coupled with the launch of a new zoom lens for expert customers: The Sony DT 16-50mm F2.8 SSM will be the natural complement to these new SLR cameras (they will be sold in kit together).

Prices are damn-good for the A65 quite-nice for the A77:

• Sony Alpha SLT-A77 at $1400/1250€ for the body only and at $2000/1800€ with a 16-50mm f/2.8
• Sony Alpha SLT-A65 at $900/850€ for the body only and at $1000/900€ with a 18-55mm
• DT 16-50mm F2.8 SSM zoom lens: $700 or 850€

But, those of us who are impatient will learn a lesson (as expected): Nothing will be available before October 2011.

Press Release

SAN DIEGO, Aug. 24, 2011 – Blazing speed, enhanced image quality, high resolution and incredible performance are just some of the features advanced amateurs and photo enthusiasts will find in Sony’s newest alpha cameras, models SLT-A77 (α77) and SLT-A65 (α65).

Sony’s latest refinements to its Translucent Mirror Technology make these new cameras the fastest, most responsive interchangeable lens cameras in their class, as well as set new performance benchmarks that even professional DSLRs have yet to achieve. The α77 and α65 both feature a newly developed Exmor™ APS HD CMOS sensor with 24.3 effective megapixel resolution, as well as the world’s first XGA OLED Tru-Finder™ viewfinder. The sensor teams with the next generation of Sony’s BIONZ® image processing engine to handle huge amounts of high speed data from the camera sensor, enabling unprecedented response times and flawless image quality with ultra-low noise when shooting still images or Full HD video.

“We feel that these cameras are not only a significant evolution of our breakthrough Translucent Mirror Technology,” said Mike Kahn, director of the alpha camera business group for Sony Electronics. “They’re also a revolution in terms of redefining how this unique technology can be put to use by enthusiasts.”
The much anticipated successor to Sony’s acclaimed α700 DSLR, the α77 boasts the world’s fastest continuous autofocus (AF) shooting performance (among DSLRs in Aug 2011), capturing a burst of full resolution, 24 megapixel images at 12 frames per second with full-time phase-detection AF. The α65 achieves a similarly impressive 10fps shooting speed.

Precision AF tracking of moving subjects is more precise with the α77 due to a new 19-point autofocus system with 11 cross sensors. The α65 boasts 15-point AF with three cross sensors. Tracking Focus maintains accurate focus lock on a moving subject – even if the target is momentarily obscured. Additionally, a new electronic front shutter curtain achieves a minimum release time lag of approximately 50 milliseconds, comparable to much more expensive professional-class DSLRs.

The α77 and α65 further refine Sony’s acclaimed Fast Continuous AF Full HD Movie shooting, already featured on previous Sony Translucent Mirror cameras. Phase Detection maintains accurate focus during video shooting of portrait subjects, even when they’re moving at fast speeds.

Unprecedented image quality and creative options
A broad sensitivity range of ISO 100-16000 expands (α77 only) down to ISO 50. At the highest sensitivities, both cameras can freeze fast action or capture atmospheric low-noise shots without flash. Low ISO settings are ideal when used with a long exposure to create expressive shots, such as splashing water.

Both cameras showcase a remarkably crisp OLED Tru-Finder™ viewfinder, the world’s first of its kind. With a 2359k dot (XGA) resolution, this precision electronic viewfinder offers a bright, highly detailed, high contrast image with 100 percent frame coverage and a wide field of view comparable to the most advanced class optical viewfinders.

However, unlike optical viewfinders, users have expansive customization capabilities through the XGA OLED Tru-Finder™ viewfinder and can preview the effects of adjusting exposure, white balance and other settings in real-time. Photographers can also make fine focus adjustments via a zoomed-in portion of the image.

The Smart Teleconverter displays an enlarged central portion of the image sensor, allowing compositions to be displayed clearly on the OLED viewfinder and captured as 12 megapixel images with a digital zoom factor of 1.4x or 2x.

In another first for DSLR cameras, both new models can capture Full HD video at 60p (progressive) frame rates – incorporating the recently introduced AVCHD™ Progressive (Ver. 2.0) format. Also, 24p shooting is available for capturing beautiful cinematic video footage. Manual focusing and P/A/S/M exposure modes, familiar to creative filmmakers, also can provide enhanced control during video shooting.
Shooters can compose and review stills and video on the adjustable-angle three-inch Xtra Fine LCD™ display that offers high resolution (921k dot) and TruBlack™ technology for superb detail and contrast. As an extra refinement, the α77 introduces the world’s first three-way adjustable screen that tilts and pivots freely for effortless framing at any angle (α65: two-way adjust LCD).

Revised ergonomics on both cameras include a comfortably contoured new grip design and tactile new button layout for ‘eyes off’ operation while viewing via the high-resolution XGA OLED Tru-Finder™ viewfinder.

The α77 adds front and rear control dials for intuitive fingertip operation and a separate top-mounted LCD data display. The durable body features magnesium alloy panels for strength and lightness. Key controls are sealed against the effects of dust and moisture, complementing similar levels of protection offered by the new SAL1650 lens, VG-C77AM Vertical Grip for α77 and HVL-F43AM flash unit.
A new shutter unit on the α77 is tested up to 150,000 cycles and supports an ultra-fast minimum 1/8000 sec shutter speed (1/250 sec flash sync). On-board GPS allows automatic geo-tagging of photos and video clips with location data.

New DT 16-50mm F2.8 SSM zoom lens and accessories
The growing range of compatible A-mount lenses for both cameras now includes the quiet, bright DT 16-50mm F2.8 SSM standard zoom with 16mm wide angle coverage that’s ideal for both portrait and everyday shooting.

The high-performance lens features a dust- and moisture-resistant design, and offers a zoom range of approximately 3x range at constant wide F2.8 aperture. Optical performance is assured by aspherical glass and three ED (Extra Low Dispersion) lens elements to minimize aberration at all focal lengths. An internal Super Sonic wave Motor (SSM) drive enables fast, quiet autofocus.

An optional dust- and moisture-resistant VG-C77AM Vertical Grip for α77 assures comfortable handling in vertical shooting positions. It can house up to two NP-FM500H InfoLITHIUM® batteries, doubling shooting stamina up to approximately 1060 shots (via LCD monitor)/940 shots (via Tru-Finder™ viewfinder) when using Memory Stick PRO Duo™ media. Other new A-mount system accessories include a back pack (LCS-BP2), soft carrying cases (LCS-SC21 and LCS-SC8), LCD protectors and eyepiece cups.

Pricing and Availability
The new α77 Translucent Mirror interchangeable lens camera will be available in a kit with the new SAL1650 f2.8 lens for about $2000, and offered as body-only for about $1400. The SAL1650 lens will also be sold separately for about $700.

The new VG-C77AM vertical grip, designed for the α77 camera, will be available in October for about $300.

The new α65 Translucent Mirror interchangeable lens camera will be available in a kit with a standard 18-55mm lens (SAL1855) for about $1000, and offered as body-only for about $900.
Both the α77 and α65 cameras kits and the new SAL1650 lens will be available this October at Sony retail stores (www.store.sony.com) as well as other authorized retailers throughout the Sony dealer network.

For “sneak peak” videos of the new products, please visit www.sony.com/cameravideos.

Since a lot of information reached our ears already through a number of different leaks, it is now possible to make a few educated guesses and to attempt a comparison with the older Sony Alpha 700 (many of its owners are impatiently waiting for its successor(s)) and the direct competition in the Nikon and Canon ranges.

Legend: Green means “best in class”, Red means “worst in class”.

Let’s not forget that this comparison is still based upon rumors (which will or will not be confirmed in the coming hours).