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Sony Alpha SLT-A77 · Photo source
Sony · Alpha
Alpha SLT-A77
A 24.3 MP APS-C A-mount camera with a translucent mirror, OLED viewfinder and full-resolution 12 fps continuous shooting.
- Type
- Translucent mirror
- Sensor
- APS-C
- Megapixels
- 24.3
- Lens
- Sony A-mount
- Video
- 1920 × 1080 at 60 fps
- Body weight
- 653 g
What reviewers say
Both reviews praised the handling, fast shooting and detailed electronic viewfinder. PhotographyBlog judged image quality favourably but criticised burst tracking and video focus jumps. Reviewed.com’s review for ABC News was less positive about low-light JPEG detail, finding that processing RAW files improved results.
From photographyblog.com and abcnews.com
Specifications
Report a wrong or missing specImage and sensor
- Camera type
- Translucent mirror
- Sensor format
- APS-C
- Sensor type
- Exmor APS HD CMOS
- Sensor dimensions
- 23.5 × 15.6 mm
- Effective resolution
- 24.3 MP
- Largest image
- 6000 × 4000
- RAW recording
- Yes
- Standard ISO range
- 100–16000
- Sensor detail
- 24.7 million total photosites; fixed translucent mirror feeds a dedicated phase-detection AF sensor while the main sensor supplies live view
- Image formats
- JPEG, RAW (Sony ARW 2.3), RAW+JPEG and 3D MPO panoramas; 3:2 or 16:9 stills
- ISO detail
- Auto ISO 100–12800 with adjustable limits; expanded ISO 50; multi-frame noise reduction ISO 100–25600; main ISO range excludes expansion
- Image processor
- BIONZ
Lens and shooting
- Lens mount
- Sony A-mount
- Stabilisation
- Sensor shift
- Maximum continuous burst
- 12 fps
- Lens detail
- Compatible Sony, Minolta and Konica Minolta A-mount AF lenses; kit lenses are separate from body specifications
- Autofocus
- 19-point phase-detection AF with 11 cross sensors; EV −1–18 at ISO 100 with an F2.8 lens; AF-S, AF-A, AF-C, direct manual and manual focus; tracking AF and built-in LED assist
- Shutter
- 1/8000–30 seconds and Bulb; flash sync 1/250 second; selectable electronic first curtain; maker-rated approximately 150,000 shutter operations
- Burst detail
- Up to 12 fps at full resolution in Continuous Advance Priority AE with continuous phase-detection AF; ordinary drive 8 fps Hi or 3 fps Lo. Maker buffer claim at 12 fps: 13 Extra Fine JPEG, 17 Fine/Standard JPEG, 13 RAW or 11 RAW+JPEG frames; ordinary drive reaches 18 Fine/Standard JPEG frames. Performance depends on card and shooting conditions.
- Stabilisation detail
- SteadyShot INSIDE sensor shift for stills, maker claim approximately 2.5–4.5 stops; electronic stabilisation for movies
- Flash
- Automatic pop-up flash, guide number 12 in metres at ISO 100; ADI, pre-flash TTL and manual output; ±3 EV flash compensation; external compatible flash required for wireless and high-speed sync
- Exposure controls
- PASM, Auto, Auto+, scene, panorama and memory-recall modes; 1200-zone metering; ±5 EV exposure compensation in 1/3 or 1/2 steps; three-frame Auto HDR, D-Range Optimizer and Picture Effects
Video
- Highest video resolution
- 1920 × 1080 at 60 fps
- Video detail
- Japan/NTSC model: 1920 × 1080 AVCHD 2.0 at 60p/28 Mbps, 60i/24 or 17 Mbps, and 24p/24 or 17 Mbps; PAL models use 50p, 50i and 25p. MP4 supports 1440 × 1080 or VGA. P/A/S/M movie exposure modes require manual focus; continuous phase-detection AF is available with automatic movie exposure.
- Audio
- Built-in stereo microphone with wind-noise reduction, external stereo microphone input and mono playback speaker
Screen and viewfinder
- Viewfinder
- Electronic
- Screen size
- 3″
- Screen dots
- 921,600
- Touchscreen
- No
- Tilting screen
- Yes
- Display detail
- Three-axis articulating LCD: 150° upwards, 180° forwards, then rotation 180° right or 90° left; 921,600 dots count colour subpixels; focus peaking and magnification; separate top status LCD
- Viewfinder detail
- 0.5-type XGA OLED Tru-Finder with 2,359,296 dots, 100% coverage and approximately 1.09× magnification with a 50 mm lens; focus magnification and electronic level
Connections and design
- Battery life (maker's claim)
- 470 photographs
- Body weight
- 653 g
- Release detail
- Sony China announced staggered availability from mid-September 2011; the UK announcement specifies October 2011; Sony Japan specifies 14 October 2011. September is the earliest maker-stated retail precision read.
- Recording media
- Single slot accepting SD/SDHC/SDXC (UHS-I supported), Memory Stick PRO Duo and PRO-HG Duo
- Ports
- USB 2.0 Hi-Speed, mini HDMI Type C, 3.5 mm stereo microphone input, wired remote, DC input and flash sync terminal; Auto-lock accessory shoe and optional infrared remote
- Wireless connections
- GPS geotagging is built into the SLT-A77V regional model represented by the Japanese specification and photograph.
- Battery life detail
- NP-FM500H; CIPA maker claim approximately 470 photographs using the viewfinder or 530 using the LCD
- Charging
- Supplied BC-VM10A external charger
- Dimensions
- Approximately 142.6 × 104 × 80.9 mm (width × height × depth), excluding protrusions
- Weight detail
- Approximately 653 g body only; 732 g including battery and Memory Stick PRO Duo
- Materials
- Magnesium-alloy body with dust and moisture resistance measures; Sony does not guarantee complete resistance in all conditions
- Colours
- Black
- In the box
- NP-FM500H battery, BC-VM10A charger, shoulder strap, eyepiece cup, USB cable and software CD; lenses depend on kit
Pros and cons
Pros
- Phase-detection autofocus during fast bursts and movies
- Three-way articulating screen and OLED viewfinder
- Two control dials, top status display and sensor-shift stabilisation
Cons
- Small RAW buffer at the fastest burst speed
- JPEG noise reduction can soften fine detail
Closest rivals
Model | Type | Sensor | Megapixels | Lens | Video | Body weight | Released |
|---|---|---|---|---|---|---|---|
| Translucent mirror | APS-C | 16.2 | Sony A-mount | 1920 × 1080 at 25 fps | 415 g | Jul 2011 | |
| Translucent mirror | APS-C | 24.3 | Sony A-mount | 1920 × 1080 at 60 fps | 543 g | Sept 2011 | |
| Translucent mirror | APS-C | 14.2 | Sony A-mount | 1920 × 1080 at 29.97 fps | 433 g | Sept 2010 |
Sources
- sony.jp/ichigan/products/archive/SLT-A77V/spec.html
- sony.com.cn/newscenter/product_2011/598.htm
- sony.jp/CorporateCruise/Press/201108/11-0824B
- mynewsdesk.com/uk/sony-europe/pressreleases/a77-and-a65-cameras-from-sony-with-…
Photo: sony.jp
- Sony SLT-A77V product view with DT 16-50mm kit lens.: sony.jp/products/picture/SLT-A77VQ.jpg
- Sony SLT-A77 rear controls view.: sony.jp/products/picture/SLT-A77V_rear.jpg
- Sony SLT-A77 rear controls from another angle.: sony.jp/products/picture/SLT-A77V_rear_02.jpg
- Sony SLT-A77 side view showing lens mount.: sony.jp/products/picture/SLT-A77V_2.jpg
