Sony
, commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional ...
's midrange Alpha SLT camera line.
The successor to the
Sony A700
, commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional ...
CMOS sensor
An active-pixel sensor (APS) is an image sensor where each pixel sensor unit cell has a photodetector (typically a pinned photodiode) and one or more active transistors. In a metal–oxide–semiconductor (MOS) active-pixel sensor, MOS field-effec ...
and has a 12-
fps
FPS may refer to:
Arts and entertainment
* "F.P.S." (''Law & Order: Criminal Intent''), an episode of the TV show ''Law & Order: Criminal Intent''
* '' fps magazine'', a defunct magazine about animation
* ''The Fabulous Picture Show'', a televi ...
burst-shooting mode.
The camera is fitted with Sony's patented “translucent mirror” technology.
On 1 May 2014 its replacement, the α77 II (ILCA-77M2) was announced with availability in June.
Model variants
Model variants of the α77 camera body:
* SLT-A77V with GPS.
* SLT-A77 without GPS (depending on country).
Depending on country/market, the α77 camera is also available in different kits:
* SLT-A77VQ (α77V+ 16-50mm lens).
* SLT-A77VK (α77V+ 18-55mm lens).
* SLT-A77VM (α77V+ 18-135mm lens).
Lens mount
Sony Alpha SLT-A77 uses A-mount lens bayonet.
Features
Image features
* 24.3 megapixel
Exmor
Exmor is the name of a technology Sony implemented on some of their CMOS image sensors. It performs on-chip analog/digital signal conversion and two-step noise reduction in parallel on each column of the CMOS sensor.
Exmor RS is the world's ...
APS-C HD CMOS sensor.
* Updated
BIONZ
BIONZ is a line of image processors used in Sony digital cameras.
It is currently used in many Sony α DSLR and mirrorless cameras. Image processing in the camera converts the raw data from a CCD or CMOS image sensor into the format that is sto ...
* 19-point autofocus sensors with 11 cross type sensors.
* TTL phase-detection AF.
* Object tracking AF.
* AF Micro Adjust.
* 1200 Zone exposure metering.
ISO
* ISO 100 - 16,000 (25,600 with multi-image combination. Expands down to ISO 80, 64 and 50).
* Auto ISO with customizable lower and upper limits.
Shutter
* 12fps burst mode at full 24.3 megapixel resolution.
* 1/8000 - 30sec (and Bulb) is the shutter speed range.
* Shutter rated for 150,000 actuations.
Ergonomics and functions
* TruFinder XGA
OLED
An organic light-emitting diode (OLED or organic LED), also known as organic electroluminescent (organic EL) diode, is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light i ...
electronic viewfinder with 2359K dots resolution with full 100% frame coverage.
* TruBlack XtraFine LCD screen (3"/ 7,5 cm) with 921.6K dots resolution with pull-out three-hinge tilt/swivel functionality.
* Live View with full-time Phase Detection AF.
* Top panel LCD with illumination.
* Built-in dark red auto-focus illuminator.
* Dual anti-dust sensor cleaning system.
* SteadyShot INSIDE, in-body image stabilization system.
* D-Range Optimiser (5 levels and auto).
* Stereo microphone and external mic socket.
* A magnesium alloy body with weather sealing.
* Built in GPS (SLT-A77V model only).
* UHS-I compatible.
* 3D Sweep Panorama.
Video
* Full HD Movies in
1080i60
1080i (also known as Full HD or BT.709) is a combination of frame resolution and scan type. 1080i is used in high-definition television (HDTV) and high-definition video. The number "1080" refers to the number of horizontal lines on the screen. T ...
1080p24
1080p (1920×1080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen ver ...
,
1080i50
1080i (also known as Full HD or BT.709) is a combination of frame resolution and scan type. 1080i is used in high-definition television (HDTV) and high-definition video. The number "1080" refers to the number of horizontal lines on the screen. T ...
1080p25
1080p (1920×1080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen ver ...
and 1440 x 1080 @ 30fps, 640 x 424 @ 30fps most with a range of bitrate settings.
* AVCHD / MP4 recording formats.
* MPEG-4 AVC / H.264 video compressions.
* Dolby Digital (AC-3) / MPEG-4 AAC-LC audio recording formats.
Firmware updates
On 5 February 2013, Sony released a new firmware'' V1.07,'' with the following enhancement:
* Added support for Sony α lenses (with automatic compensation compliancy): SAL-100M28, SAL-50M28, SAL-85F28, SAL-18200, SAL-20F28, SAL-28F28.
Performance
In the
DxOMark
DxOMark, currently stylized as DXOMARK, is a commercial website described as "an independent benchmark that scientifically assesses smartphones, lenses and cameras". Founded in 2008, DxOMark was originally owned by DxO Labs, a French engineeri ...
Overall Sensor Score test, which is based on all characteristics of a camera sensor, the APS-C (23.5x15.6mm sensor size) Sony α77 scored 78 points, only one point less than the full-format (36x24mm sensor size) DSLRs
Sony Alpha 900
The α900 (DSLR-A900) is a full-frame digital SLR camera, produced by Sony. An early design study of the camera was shown at PMA on 8 March 2007, and a newer prototype announced at PMA 2008 on 31 January 2008. Sony officially introduced the final ...
and
Canon EOS 5D Mark II
Canon or Canons may refer to:
Arts and entertainment
* Canon (fiction), the conceptual material accepted as official in a fictional universe by its fan base
* Literary canon, an accepted body of works considered as high culture
** Western can ...
.
Reception
Overall the reception for the Sony SLT-A77 since its release has been mixed to positive.
Digital Photography Review
''Digital Photography Review'', also known as ''DPReview,'' is a website about digital cameras and digital photography, established in November 1998. The website provides comprehensive reviews of digital cameras, lenses and accessories, buying g ...
awarded the Sony SLT-A77 an overall score of 81% and a silver award, praising its innovative and detailed EVF viewfinder and its fast 12fps shooting mode but criticizing its JPEG quality and noise level especially at high ISO.
Photography Blog gave the Sony SLT-A77 a 5 out of 5 stars praising its innovative EVF display, the inclusion of full 1080p video, built-in GPS, 12fps burst mode, dual control dials, top-panel LCD, a 3-way rear screen and myriad of creative effects such as HDR, Dynamic Range Optimization, creative styles, picture effects and the innovative sweep panorama mode.
BIONZ X
BIONZ is a line of image processors used in Sony digital cameras.
It is currently used in many Sony α DSLR and Mirrorless interchangeable-lens camera, mirrorless cameras. Image processing in the camera converts the raw data from a Charge-coupled ...
image processor similar to the
Sony α7
The Sony α7, α7R, α7S and α7C (the α is sometimes spelled out as Alpha) are four closely related families of full-frame mirrorless interchangeable-lens cameras. The first two were announced in October 2013,
{{Konica Minolta/Sony DSLR cameras
Cameras introduced in 201177Live-preview digital cameras