View source for Engineering:Sony Alpha 77

{{Infobox camera
| model = Sony α77
| image      = Sony A77.jpg
| caption=  SLT-A77V + SAL-1650
| kind = Digital single-lens translucent camera
| sensor = Exmor APS HD CMOS sensor (23.5 X 15.6mm) 
| res = Approx. 24.3 megapixels 
| lens = Interchangeable, Sony A-mount
| shutter = Electronically-controlled, vertical-traverse, focal-plane shutter 
| shutterRange = 1/8000 to 30 seconds, bulb 
| metering = Advanced 1200-zone evaluative metering, Multi-segment, Center-weighted, Spot 
| emode = Portrait, Landscape, Macro, Sports action, Sunset, Night portrait, Night View, Handheld Twilight, (A) Aperture Priority, (P) Program Mode, (S) Shutter Priority, (M) Manual mode
| farea = Wide (auto, 19 points)/Zone/Spot/Local selectable 
| fmode = Predictive control(AF-A, AF-C), Focus Lock, Eye-start AF, Manual-Focus
| cont = 24.3megapixel at 12fps 
| viewfinder = TruFinder XGA OLED Electronic View Finder(2,359k dots)
| speedRange = ISO 50-16000
| flash = Built-in, Pop-up Auto, Auto, Fill-flash, Slow Sync., Rear Sync., Hi-speed sync., Red-eye reduction (on/off selectable for Autoflash and fill-flash mode), Wireless, Off, ADI flash / Pre-flash TTL / Manual flash 
| flbkt = 0.3/0.5/0.7/2.0/3.0EV steps, 3/5 frames(2.0/3.0EV: only 3 frames) selectable 
| WB = Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm White, Cool White, Day White, Daylight), Flash, Setting the color temperature, Color Filter, Custom 
| battery = InfoLITHIUM NP-FM500H 
| rearLCD = 3.0” TFT Xtra Fine LCD (921,600 pixels) w/TruBlack technology 
| storage = Memory Stick PRO Duo/Pro-HG Duo/PRO-HG HX Duo media - SD, SDHC and SDXC memory card 
| weight = Approx. {{convert|1|lb|7|oz|g|abbr=on}} (excl battery, lens & media)
Approx. {{convert|1|lb|9.8|oz|g|abbr=on}} (w/battery & media) 
| obp = Sony SLT-A77 VG-C77AM Vertical battery grip
| msrp =
| madeIn = {{THA}}
|dimensions = Width  (mm) 142.6
Height (mm) 104.0
Depth  (mm) 80.9}}

The '''Sony α77''' was the flagship for [[Company:Sony|Sony]]'s midrange Alpha SLT camera line.

The successor to the Sony A700, it is equipped with a 24.3 MP [[Engineering:APS-C|APS-C HD]] CMOS sensor and has a 12-[[Frame rate|fps]] burst-shooting mode.

The camera is fitted with Sony's patented “translucent mirror” technology.<ref>{{cite web | url=http://www.photographytalk.com/photography-equipment-reviews/sony-slt-a77-camera-review | title=Sony SLT-A77 Camera Review | publisher=PhotographyTalk | access-date=August 22, 2012 | archive-date=September 21, 2012 | archive-url=https://web.archive.org/web/20120921140319/http://www.photographytalk.com/photography-equipment-reviews/sony-slt-a77-camera-review | url-status=live }}</ref>

On 1 May 2014 its replacement, the [[Engineering:Sony Alpha 77 II|α77 II]] (ILCA-77M2) was announced with availability in June.<ref>{{cite web|title=Sony Electronics introduces the speedy new α77 II|url=http://blog.sony.com/press/28262/|work=Sony Electronics|access-date=1 May 2014|archive-date=2 May 2014|archive-url=https://web.archive.org/web/20140502003441/http://blog.sony.com/press/28262/|url-status=live}}</ref>

==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 APS-C HD CMOS sensor.
* Updated BIONZ Image Processor.
* 2nd generation Translucent Mirror Technology.
* Multi-frame Noise Reduction.

===Autofocus and metering===
* 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 [[Chemistry:OLED|OLED]] electronic viewfinder with 2359K dots resolution with full 100% frame coverage.
* TruBlack XtraFine LCD screen (3"/ 7,5&nbsp;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.<ref>{{Cite web |url=http://www.transcend-info.com/Learning/?LC=2&Func1No=3&Func2No=211&Func3No=136 |title=Transcend-info.com |access-date=2013-09-16 |archive-date=2013-10-06 |archive-url=https://web.archive.org/web/20131006155716/http://transcend-info.com/Learning/?LC=2&Func1No=3&Func2No=211&Func3No=136 |url-status=live }}</ref>
* 3D Sweep Panorama.

===Video===
* Full HD Movies in 1080i60, 1080p60, 1080p24, 1080i50, 1080p50, 1080p25<ref>{{Cite web |url=https://docs.sony.com/release/SLT-A77_A77V.pdf |title=Manual, p218 |access-date=2015-01-13 |archive-date=2015-09-07 |archive-url=https://web.archive.org/web/20150907125713/https://docs.sony.com/release/SLT-A77_A77V.pdf |url-status=live }}</ref> and 1440 x 1080 @ 30fps, 640 x 424 @ 30fps<ref>{{Cite web |url=http://snapsort.com/cameras/Sony-A77-specs |title=Snapsort specs |access-date=2015-01-13 |archive-date=2015-02-17 |archive-url=https://web.archive.org/web/20150217141120/http://snapsort.com/cameras/Sony-A77-specs |url-status=live }}</ref> 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<ref>{{Cite web |url=http://www.sony.co.uk/support/en/product/SLT-A77V/downloads/FW_A77_V107_WIN |title=Sony: SLT-A77V updates {{!}} Download updates for SLT-A77V {{!}} SLT-A77V |access-date=2013-09-16 |archive-date=2013-10-04 |archive-url=https://web.archive.org/web/20131004213505/http://www.sony.co.uk/support/en/product/SLT-A77V/downloads/FW_A77_V107_WIN |url-status=live }}</ref> 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 [[Engineering:DxOMark|DxOMark]] 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 and [[Engineering:Canon EOS 5D Mark II|Canon EOS 5D Mark II]].<ref>[http://www.dxomark.com/index.php/Cameras/Camera-Sensor-Ratings Dxomark.com] {{Webarchive|url=https://web.archive.org/web/20120321161023/http://www.dxomark.com/index.php/Cameras/Camera-Sensor-Ratings |date=2012-03-21 }} Retrieved 28 September 2013.</ref>

==Reception==
Overall the reception for the Sony SLT-A77 since its release has been mixed to positive.

Digital Photography Review 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.<ref>{{Cite web |url=http://www.dpreview.com/reviews/sonyslta77/ |title=Sony SLT-A77 In-depth Review: Digital Photography Review<!-- Bot generated title --> |access-date=2012-01-23 |archive-date=2021-04-26 |archive-url=https://web.archive.org/web/20210426003713/https://www.dpreview.com/reviews/sonyslta77/ |url-status=live }}</ref>

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.<ref>{{Cite web |url=http://www.photographyblog.com/reviews/sony_a77_review/ |title=Sony α77 Review {{!}} PhotographyBLOG<!-- Bot generated title --> |access-date=2012-01-24 |archive-date=2012-01-21 |archive-url=https://web.archive.org/web/20120121033705/http://www.photographyblog.com/reviews/sony_a77_review |url-status=live }}</ref>

=={{anchor|Sony Alpha 77 II}}Sony α77 II==
The [[Engineering:Sony Alpha 77 II|α77 II]] features a BIONZ X image processor similar to the Sony α7 series. It comes with Wi-Fi, NFC and also has 79 AF points with 15 crossing sensor, 12 fps burst speed up to 60 frames in full resolution, continuous AF video Full HD at 60p and 24p. One of the major features is the new sensor with less noise.<ref>{{cite web |url=https://www.engadget.com/2014/05/01/sony-alpha-a77-ii/ |title=Sony bets on speed with the second edition of its α77 DSLR |author=Edgar Alvarez |date=May 1, 2014 |access-date=September 14, 2017 |archive-date=March 19, 2018 |archive-url=https://web.archive.org/web/20180319194943/https://www.engadget.com/2014/05/01/sony-alpha-a77-ii/ |url-status=live }}</ref> GPS has been removed, as has the LED AF illuminator—the pop-up flash is now used for focus assist.

== References ==
{{Reflist}}

== External links ==

[[File:Sony Alpha 77-Back.JPG|thumb|left|back of the Alpha 77]]

{{Konica Minolta/Sony DSLR cameras}}

[[Category:Live-preview digital cameras]]

{{Sourceattribution|Sony Alpha 77}}