Sony SLT-A77

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Sony SLT-A77
81%
Silver Award
Reviewed: Oct 2011
User reviews (2)
4.25
24.3 megapixels | 3" screen | APS-C sensor

The A77 is the long-awaited replacement for the A700, and spec-wise it's impressive: the A77 features a new 24MP APS-C CMOS sensor, 12fps full-resolution shooting and the highest resolution EVF we've ever encountered (a 2.4M dot OLED finder). It also uses a new 19-point AF sensor, 11 points of which are cross-type (sensitive to detail in both the vertical and horizontal axis). Clever use of the main sensor's live view allows the A77 to track objects as they move across the frame, enabling the camera to have a better understanding of which AF point it should be using at any given time.

The A77 isn't perfect, but we're pretty confident though that whatever your level of expectations and expertise, its rugged and well thought-out ergonomics, innovative full-time live view and AF systems and exceptionally good EVF will keep you very happy indeed. However, the somewhat mushy JPEG image quality, high noise levels and slightly laggy operation stop the A77 from getting a gold award.

Specifications

Body type
Body type Mid-size SLR
Sensor
Max resolution 6000 x 4000 ?
Other resolutions 6000 x 3376, 4240 x 2832, 4240 x 2400, 3008 x 2000, 3008 x 1688 ?
Image ratio w:h 3:2, 16:9 ?
Effective pixels 24.3 megapixels ?
Sensor photo detectors 24.7 megapixels ?
Sensor size APS-C (23.5 x 15.6 mm) ?
Sensor type CMOS ?
Processor Bionz
Image
ISO Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800, 16000 (50, 25600 with boost) ?
White balance presets 8 ?
Custom white balance Yes (1) ?
Image stabilization Sensor-shift ?
Uncompressed format RAW
JPEG quality levels Fine, Normal ?
Optics & Focus
Autofocus
  • Phase Detect
  • Multi-area
  • Selective single-point
  • Single
  • Continuous
  • Face Detection
  • Live View
?
Digital zoom No
Manual focus Yes ?
Number of focus points 19
Lens mount Sony/Minolta Alpha mount
Focal length multiplier 1.5× ?
Screen / viewfinder
Articulated LCD Fully articulated ?
Screen size 3" ?
Screen dots 921,000 ?
Touch screen No
Live view Yes ?
Viewfinder type Electronic ?
Viewfinder coverage 100 % ?
Viewfinder magnification 1.1× ?
Photography features
Minimum shutter speed 30 sec ?
Maximum shutter speed 1/8000 sec ?
Aperture priority Yes ?
Shutter priority Yes ?
Manual exposure mode Yes
Subject / scene modes Yes
Built-in flash Yes (Pop-up)
Flash range 12 m
External flash Yes (Hot-shoe, PC Sync)
Flash modes Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Continuous drive Yes (12 fps) ?
Self-timer Yes (2 or 10 sec)
Metering modes
  • Multi
  • Center-weighted
  • Spot
Exposure compensation ±5 EV (at 1/3 EV, 1/2 EV steps) ?
AE Bracketing (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
WB Bracketing No ?
Videography features
Format
  • MPEG-4
  • AVCHD
  • H.264
Microphone Stereo
Speaker None
Resolutions 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Storage
Storage types SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo ?
Connectivity
USB USB 2.0 (480 Mbit/sec) ?
HDMI Yes (Mini Type C) ?
Wireless EyeFi ?
Remote control Yes (Optional)
Physical
Environmentally sealed Yes (Dust and moisture resistant)
Battery Battery Pack ?
Battery description Rechargeable NP-FM500H battery & charger ?
Weight (inc. batteries) 732 g (1.61 lb / 25.82 oz)
Dimensions 143 x 104 x 81 mm (5.63 x 4.09 x 3.19")
Other features
Orientation sensor Yes
GPS BuiltIn
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