Sony A77 Specs

A77 Camera specs are:

  • 24.3 megapixel APS-C Sensor
  • Magnesium Alloy and high grade plastic body
  • Main controls sealed against dust and moisture
  • Anti-dust system
  • ISO 100 – 16000 equivalent (expandable to ISO 50)
  • AUTO ISO 100 – 12800 selectable with upper or lower limit
  • In-body Image Stabilization
  • 12 frames/second at full resolution with continuous autofocus
  • 30 sec to 1/8000 shutter speed, bulb
  • 1/250 sec. flash sync. speed
  • Exposure Compensation ±5.0 EV (1/3 EV, 1/2 EV steps selectable)
  • 1200-zone evaluative metering plus Spot, Center weighted modes
  • XGA OLED, 2,359,296 dots electronic viewfinder
  • 3-way tilt/swivel, 921,600 dots TFT LCD with TruBlack technology
  • Storage by SD memory card, Memory Stick Duo
  • USB 2.0 – no Thunderbolt
  • 1080p HD Video
  • Virtual horizon indicator in viewfinder
  • External Microphone jack (but no volume control)
  • In-body lens correction of vignetting, CA and distortion (JPEG only)
  • Electronic first curtain shutter reduces vibration and shutter lag
  • Built in GPS
  • Shot Result Preview allows preview of shutter speed, a la Panasonic G series
  • Focus Peaking function helps verify manual focus
  • ‘Smart Teleconverter’ shows 1.4 or 2x crop
  • Memory Recall function saves three sets of camera settings
  • Approx. 470 shots with viewfinder and 530 shots with LCD monitor (CIPA standard) for still images
  • Approx. 185 min. with viewfinder and 185 min. with LCD monitor for videos
  • Dimensions 142.6 x 104.0 x 80.9mm (excluding protrusions)
  • Weight 732g with battery and card

Lens Specs:

  • 16-50mm f2.8
  • SSM
  • Not branded as a Zeiss, nor a ‘G’
  • Dust and moisture sealed
  • 72mm filter thread
  • Hood included

Here’s Sony’s press release, from the August 24, 2011 announcement:


α77 and α65 Models Expand Translucent Mirror Technology Line; Deliver 24.3 megapixels with up to 12- and 10- fps AF-enabled continuous shooting

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 ( as well as other authorized retailers throughout the Sony dealer network.

18 Responses to Sony A77 Specs

  1. alan says:


  2. Lucas says:

    What’s Audio?

  3. David James Ross says:

    Audio for video? An external microphone socket is very useful for quality video.

  4. Ross A. Buniao says:

    Did they fix the overheating issue while recording video that plagues the other SLT models?

  5. David James Ross says:

    They believe they’ve fixed it with the A35 which does video up to 29 minutes. I haven’t had any problems so far, but then I’ve used it in places where overheating is less likely.

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  7. we used now A35 is verry nice, we think A77 we will all so order in the furture….
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  8. Tim says:

    Will it have digital date stamp feature. Miss it on my A55. Like being able to just look at the photo and see the date.

  9. Tim says:

    You can extend video time/overheating by disabling stabilization, but then you get shaky video.

  10. Peter Bo says:

    Anyone know yet if this camera will have a built in intervalometer, or not?

  11. Pierre says:

    I like this new SLT A77, great camera !
    Do you know if the mode P can be shifted with A or S controls ? ( it is not possible on the A55, and it’s a miss in my point of view )

  12. David James Ross says:

    I think you mean what other camera makers call ‘program shift’. I’ve just tried the A35 and it doesn’t do it either. I agree it’s a strange omission. No idea yet whether the A77 will do this.

  13. High Resolution of 24.3 Megapixels close to Medium Format ! Excellent !