• APS-C 369.7mm2
  • 12.3 megapixels
  •  
  • APS-C 369.7mm2
  • 24.3 megapixels
  • ISO 100 - 16,000
  • Detailed specifications
  • Ricoh GXR
  • Sony Alpha SLT-A77
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:   Sony A77 II
A77 vs A77 II
General
Model Number: GXR A77
Alternate Model Number(s):    
Camera Format: Other SLR
Currently Manufactured: No No
Retail Price: $1380.00 $1999.99
Street Price:   $1,899.00
Date Available: 2009-12-31 2011-10-15
Tripod Mount: Yes Yes
Weight: 14.9 oz (423 g) 48.1 oz (1,363 g)
includes batteries, kit lens
Size: 4.5 x 2.8 x 3.0 in.
(114 x 70 x 77 mm)
5.6 x 4.1 x 3.2 in.
(143 x 104 x 81 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Sony
Effective Megapixels: 12.3 24.3
Sensor Format: APS-C APS-C
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 369.72mm2 (23.7mm x 15.6mm)
Approximate Pixel Pitch: 5.53 microns 3.95 microns
Focal Length Multiplier: n/a 1.5x
Aspect Ratio: 4:3 3:2
Color Filter Type:   RGBG
Anti Aliasing Filter:   Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: No No
DxO Sensor Score:   78
DxO Color Depth Score (bits):   24.0
DxO Dynamic Range Score (evs):   13.2
DxO Maximum Effective ISO Score (iso):   801
Image Capture
Image Resolution: 4288 x 2848 (12.2 MP, Other),
3776 x 2832 (10.7 MP, 4:3),
4288 x 2416 (10.4 MP, Other),
2848 x 2848 (8.1 MP, 1:1),
3456 x 2304 (8.0 MP, 3:2),
3072 x 2304 (7.1 MP, 4:3),
3456 x 1944 (6.7 MP, 16:9),
2304 x 2304 (5.3 MP, 1:1),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1280 x 960 (1.2 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
6000 x 4000 (24.0 MP, 3:2),
6000 x 3376 (20.3 MP, 16:9),
4240 x 2832 (12.0 MP, 3:2),
4240 x 2400 (10.2 MP, Other),
3008 x 2000 (6.0 MP, 3:2),
3008 x 1688 (5.1 MP, 16:9),
12416 x 1856 (23.0 MP, Other),
8192 x 1856 (15.2 MP, Other),
2160 x 5536 (12.0 MP, Other),
2160 x 3872 (8.4 MP, Other),
7152 x 1080 (7.7 MP, Other),
4912 x 1080 (5.3 MP, Other),
1920 x 1080 (2.1 MP, 16:9)
Image File Format: JPEG (EXIF v2.21), .DNG Raw JPEG (EXIF 2.3), MPO (3D), 12-bit RAW (ARW 2.3), RAW+JPEG
Continuous-mode frames/second: 3.0 11.6
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x480 (24)
320x240 (24)
1920x1080 (60p/​28Mbps/​PS or 60i/​24Mbps/​FX or 60i/​17Mbps/​FH or 24p/​24Mbps/​FX or 24p/​17Mbps/​FH)
1440x1080 (30p/​12Mbps)
640x480 (30p/​3Mbps)
Movie File Format: AVI (OpenDML Motion JPEG) AVCHD 2.0 / MP4; Audio :Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Ricoh GXR Sony Alpha (Minolta A)
Lens: n/a Sony 16-50mm f/2.8 DT SSM (SAL1650)
Focal Length (35mm equivalent):   24 - 75mm
Focal Length (actual): 33 - 50mm 16 - 50mm
Zoom Ratio:   3.13x
Aperture Range: f/2.5 - f/22 f/2.8 - f/22 (W/T)
Integrated ND Filter: No No
Normal Focus Range: 30 cm to Infinity
11.8 in to Infinity
30 cm to Infinity
11.8 in to Infinity
Macro Focus Range: 7 cm to Infinity
2.8 in to Infinity
 
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: Yes Yes
Digital Zoom Values: 4x (3.6x for movies) 1.4x / 2x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast detection multi / spot Phase Detection: 19 points (11 points cross type); Wide (auto, 19 points), Zone, Spot, Local
Auto Focus Assist Light? No Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: LCD EVF / LCD
Viewfinder Type:   EVF type; 1.3cm (0.5") 2,359K-dot OLED, 100% coverage, 1.09x mag., 22mm eyepoint, -4 to +3 diopter
Focus Peaking: No Yes
EVF Resolution: n/a 2,359,000 dots
Viewfinder Magnification (35mm equivalent):   0.73x
Viewfinder Magnification (nominal/claimed):   1.09x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 920,000 dots 921,600 dots (307,200 px)
Touchscreen: No No
Articulating Screen: No Yes
Tilt Swivel Screen: No Yes
Selfie Screen: No Yes
Max Playback Zoom: 16.0x 13.6x
Top Deck Display: Yes
Exposure
Maximum ISO (native):   16000
Minimum ISO (native):   100
ISO Settings: Auto, 200, 400, 800, 1600, 3200 Auto (100-12800 with selectable limits), 50 (expanded), 100, 200, 400, 800, 1600, 3200, 6400, 12800, 16000. (Multi-frame NR mode up to ISO 25600)
Auto ISO Mode: No Yes
White Balance Settings: Auto, Multi-P AUTO, Outdoors, Cloudy, Incandescent Lamp, Fluorescent Lamp, Manual Setting Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm white/Cool white/Day white/Daylight), Flash, C. Temp 2500 to 9900K, C Filter G7 to M7 (15-step), Custom, AWB micro adjustment
Shutter Speed Range: 1/3200 - 180 sec 1/8000 - 30 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 4.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL by CCD, 256-segment multi, center-weighted or spot 1200-zone Evaluative, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Movie, portrait, sports, landscape, nightscape, skew correction Scene Modes: Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night Scene, Hand-held Twilight, Auto HDR, Sweep Panorama (2D/3D)
Self Timer: 2 or 10 seconds 2, 10; 3 or 5 frames after 10 seconds
Time Lapse (intervalometer): Yes  
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, red-eye, on, slow sync, manual (FULL, 1/1.4, 1/2, 1/2.8, 1/4, 1/5.6, 1/8, 1/11, 1/16, 1/22, 1/32, 1/64), off Auto, Off, Fill-flash, Rear sync, Wireless, High-Speed sync (with external flash), Slow sync, Red-eye reduction: On/Off
Flash Guide Number (ISO 100): n/a 12.0 m / 39.4 ft.
Flash Range Description: 20cm - 3m (ISO AUTO) GN=12(m) at ISO 100; Range is lens aperture dependent
Max Flash Sync:   1/250
Flash Exposure Compensation: +/- 2.0 EV in 0.3EV steps +/- 2.0 EV in 0.3EV steps
External Flash Connection: Hot shoe Proprietary Hot Shoe, PC Sync Terminal
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: SD / SDHC MS Duo / MS PRO Duo / SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: .DNG Raw 12-bit RAW (ARW 2.3), RAW+JPEG
Movie File Format: AVI (OpenDML Motion JPEG) AVCHD 2.0 / MP4; Audio :Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
Included Memory: 86.0 MB No memory included
Included Memory Type: built-in memory  
Connectivity
Built-In Wi-Fi: No No
NFC: No No
Bluetooth: No No
Built-In GPS: No Yes
Microphone Jack: No Yes
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed
PictBridge Compliant: No Yes
DPOF Compliant: No Yes
Remote Control: No Yes
Remote Control Type:   Optional Wireless or Wired
Connections (extended):   Type-C HDMI Mini Connector (BRAVIA Sync, PhotoTV HD); Wired Remote Terminal, External Stereo Micophone Jack, DC Input
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.42
Cycle time for RAW shooting in single shot mode (seconds per frame):   0.42
Buffer size for RAW shooting in single shot mode (frames):   5
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.42
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 3.0 11.6
Buffer size for JPEG shooting in burst mode (frames, max resolution): 15 17
RAW shooting speed in burst mode (fps):   11.6
Buffer size for RAW shooting in burst mode (frames):   14
RAW+JPEG shooting speed in burst mode (fps):   11.6
Buffer Size for RAW+JPEG shooting in burst mode (frames):   13
Shutter lag (full AF, wide/mid):   0.12 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.085 seconds
Shutter lag (full AF, with flash):   0.33 seconds
Shutter Lag (prefocused):   0.054 seconds
Shutter Lag (notes):   Full AF, Wide-area mode = 0.119s
Startup Time:   0.8 seconds
Play -> Record Time:   1.0 seconds
Flash cycle time, full power:   3.2 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 320 shots 530 shots
Battery Life, Still (CIPA Rating OVF/EVF):   470 shots
Battery Life, Video:    
Battery Form Factor: Proprietary DB-90 Proprietary NP-FM500H
Usable Battery Types: 3.6V Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included:   1 x Proprietary NP-FM500H Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): No Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: No
Software
Included Software: DL-10, Irodio Photo and Video Studio, Adobe Reader, VM-1 for Mac Software CD-ROM (includes Picture Motion Browser, Image Data Converter 4)
OS Compatibility: Windows, Mac OS Windows XP SP3/Vista SP2/7, Mac OS X (v.10.5 +); PMB is Windows only
Miscellaneous
Notes & Features: Sensor and lens are interchangeable as one unit. Specs above are with the 12.3 megapixel APS-C CMOS sensor and 33mm (50mm equivalent) fixed focal length lens. Also available is a 1/1.7" ten megapixel CCD sensor with 5.1-15.3mm (24-72mm equivalent) lens. With this combination, maximum aperture varies from f/2.5 to f/4.4 across the zoom range, macro shooting distance drops to 1cm, sensor shift image stabilization becomes available, fastest shutter speed falls to 1/2000 sec., minimum ISO sensitivity is expanded to 100, flash range is 20cm-4.5m at wide angle and 15cm to 2.7m at telephoto, zoom macro scene mode is added, noise reduction is automatically applied above ISO 800, burst rate drops to 1.6 frames per second, HD movie mode is dropped and framerate increases to 30fps, battery life increases to 410 shots, body depth drops to 44.4mm, and body-only weight falls to 325 grams. Price estimate is based on US street pricing at launch - $550 for the camera body plus $830 for the APS-C fixed lens block. The 1/1.7" zoom lens block is another $440. SteadyShot INSIDE Image Stabilization, Articulating LCD, 1080p HD Video, Auto+, Multi-frame NR, Hand-held Twilight, Auto HDR, Picture Effect, D-Range Optimizer, 2D/3D Sweep Panorama, Smile Shutter, DOF Preview, 12fps Burst Mode, Built-in GPS.