• APS-C 369.7mm2
  • 16.1 megapixels
  • ISO 100 - 16,000
  • 1 inch 116.2mm2
  • 20.2 megapixels
  • 24.00mm - 100.00mm (35mm eq.)
  • Detailed specifications
  • Sony Alpha SLT-A57
  • Canon PowerShot G7 X
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:   Canon G7X Mark II
G7X vs G7X Mark II
General
Model Number: A57 G7X
Alternate Model Number(s):    
Camera Format: SLR Compact
Currently Manufactured: No No
Retail Price: $799.99 $699.99
Street Price:   $699.00
Date Available: 2012-04-15 2014-10-15
Tripod Mount: Yes Yes
Weight: 29.2 oz (828 g)
includes batteries, kit lens
10.7 oz (302 g)
includes batteries
Size: 5.2 x 3.8 x 3.2 in.
(132 x 98 x 81 mm)
4.1 x 2.4 x 1.6 in.
(103 x 60 x 40 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony  
Effective Megapixels: 16.1 20.2
Sensor Format: APS-C 1 inch
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 116.16mm2 (13.20mm x 8.80mm)
Approximate Pixel Pitch: 4.82 microns 2.41 microns
Focal Length Multiplier: 1.5x 2.7x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Fixed
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 75 71
DxO Color Depth Score (bits): 23.4 23.0
DxO Dynamic Range Score (evs): 13.0 12.7
DxO Maximum Effective ISO Score (iso): 785 556
Image Capture
Image Resolution: 4912 x 3264 (16.0 MP, 3:2),
4912 x 2760 (13.6 MP, 16:9),
3568 x 2368 (8.4 MP, Other),
3568 x 2000 (7.1 MP, 16:9),
2448 x 1624 (4.0 MP, Other),
2448 x 1376 (3.4 MP, 16:9),
12416 x 1856 (23.0 MP, Other),
5536 x 2160 (12.0 MP, Other),
8192 x 1856 (15.2 MP, Other),
3872 x 2160 (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)
5472 x 3648 (20.0 MP, 3:2),
4320 x 2880 (12.4 MP, 3:2),
2304 x 1536 (3.5 MP, 3:2),
720 x 480 (0.3 MP, 3:2),
5472 x 3080 (16.9 MP, 16:9),
4320 x 2432 (10.5 MP, 16:9),
1920 x 1080 (2.1 MP, 16:9),
720 x 408 (0.3 MP, Other),
4864 x 3648 (17.7 MP, 4:3),
3840 x 2880 (11.1 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
640 x 480 (0.3 MP, 4:3),
3648 x 3648 (13.3 MP, 1:1),
2880 x 2880 (8.3 MP, 1:1),
1536 x 1536 (2.4 MP, 1:1),
480 x 480 (0.2 MP, 1:1),
2912 x 3648 (10.6 MP, Other),
2304 x 2880 (6.6 MP, Other),
1232 x 1536 (1.9 MP, Other),
384 x 480 (0.2 MP, Other)
Image File Format: JPEG, MPO, RAW (12-bit ARW 2.3), RAW+JPEG JPEG (EXIF 2.3), 12-bit RAW (.CR2), RAW+JPEG
Continuous-mode frames/second: 10.0 6.6
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (60p(PS)/​60i(FX)/​60i(FH)/​24p(FX)/​24p(FH))
1440x1080 (30p)
640x480 (30p)
1920x1080 (60p/​30p)
1280x720 (30p)
640x480 (30p)
1920x1080 (30p/​15p)
1280x720 (6p/​3p/​1.5p)
640x480 (6p/​3p/​1.5p)
Movie File Format: AVCHD 2.0/MP4 (Audio: Dolby Digital (AC-3)/MPEG-4 AAC-LC) MP4 (Image: MPEG-4 AVC/H.264; Audio: MPEG-4 AAC-LC (Stereo))
Composite Video Out: No Yes
NTSC/PAL Switchable Video: n/a Yes
Video Usable as Viewfinder: n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Sony Alpha (Minolta A) n/a
Lens: Sony 18-55mm f/3.5-5.6 DT SAM Canon Zoom Lens
Focal Length (35mm equivalent): 27 - 83mm 24 - 100mm
Focal Length (actual): 18 - 55mm 8.8 - 36.8mm
Zoom Ratio: 3.06x 4.20x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 36 (T) f/1.8 (W) / f2.8 (T) - f/11, with 9-blade aperture; built-in 3-stop ND filter
Integrated ND Filter: No Yes
Normal Focus Range: 25 cm to Infinity
9.8 in to Infinity
5 cm to Infinity
2.0 in to Infinity
Macro Focus Range:   5 - 50 cm
2.0 - 19.7 in
Filter Thread: 55.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: Yes Yes
Digital Zoom Values: Up to 2x Precision, Up to 2x Clear Image Zoom, 1.4x (8.4MP) or 2.0x (4MP) Smart Zoom Up to 4x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Phase Detection: 15 points (3 points cross type); Wide (auto, 15 points), Zone, Spot, Local; Enhanced Object Tracking Contrast Detect AF with Face Detection; 31-point AiAF, 1-point (center for face select and track)
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: EVF / LCD No / LCD
Viewfinder Type: EVF type; 1.1cm (0.43") 1.44M/1.25M-dot LCD (480K/418K-dot time-multiplexed RGB), 100% coverage, 1.04x/0.97x magnification, 23.1/25.2mm eyepoint, -4 to +3 diopter  
Focus Peaking: Yes Yes
EVF Resolution:   n/a
Viewfinder Magnification (35mm equivalent): 0.69x  
Viewfinder Magnification (nominal/claimed): 1.04x  
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 921,600 dots (307,200 px) 1,040,000 dots (345,600 px)
Touchscreen: No Yes
Articulating Screen: Yes Yes
Tilt Swivel Screen: No
Selfie Screen: Yes
Max Playback Zoom: 13.6x  
Top Deck Display: No No
Exposure
Maximum ISO (native): 16000 12800
Minimum ISO (native): 100 125
ISO Settings: Auto (100-3200), 100 - 16000; (Multi-frame NR mode up to ISO 25600) Auto, ISO 125-12800 in 1/3 EV steps
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (4), Flash, Custom, Color Temp./ Filter (2500-9900K with 15-step Magenta/Green compensation) Auto, Daylight, Cloudy, Tungsten, Fluorescent, Fluorescent H, Flash, Underwater, Custom 1, Custom 2, Multi-area White Balance, White Balance Correction (Underwater mode), White Balance Correction
Shutter Speed Range: 1/4000 - 30 sec 1/2000 - 250 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: 1200-zone Evaluative, Center-weighted, Spot Evaluative, Center-weighted average, Spot (linked to AF frame), Face Detect AE
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Portrait, SportsAction, Macro, Landscape, Sunset, Night scene, Hand-held Twilight (6 shot layering), Night Portrait; Sweep Panorama, 3D Sweep Panorama, Auto Portrait Framing, Picture Effect (Posterization (Color, B/W), Pop Color, Retro Photo, Partial Color (R,G,B,Y), High Contrast Monochrome, Toy Camera, Soft High-key, Soft Focus, HDR Painting, Rich-tone Monochrome, Miniature), Dynamic Range Optimizer (Off/Auto/Level), Scene Modes: Portrait, Smart Shutter, Star, Handheld Night Scene, Underwater, Snow, Fireworks; Filters: High Dynamic Range, Nostalgic, Fisheye Effect, Miniature Effect, Toy Camera Effect, Background Defocus, Soft Focus, Monochrome, Super Vivid, Poster Effect; Star Portrait, Star Nightscape, Star Trails, Star Time-Lapse Movie
Self Timer: 2 or 10 seconds 1 - 30 seconds
Time Lapse (intervalometer):   No
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Off, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off Auto, Flash On, Slow Synchro, Flash Off
Flash Guide Number (ISO 100): 10.0 m / 32.8 ft. n/a
Flash Range Description: Lens dependent Auto ISO: 1.6 ft. (50 cm) - 23 ft. (7.0 m) (W), 1.3 ft. (40 cm) - 13 ft. (4.0 m) (T)
Max Flash Sync: 1/160 1/2000
Flash Exposure Compensation: +/- 2.0 EV in 0.3EV steps +/- 2.0 EV in 0.3EV steps
External Flash Connection: Hot shoe n/a
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: MS PRO Duo / SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (12-bit ARW 2.3), RAW+JPEG 12-bit RAW (.CR2), RAW+JPEG
Movie File Format: AVCHD 2.0/MP4 (Audio: Dolby Digital (AC-3)/MPEG-4 AAC-LC) MP4 (Image: MPEG-4 AVC/H.264; Audio: MPEG-4 AAC-LC (Stereo))
Included Memory:   No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No Yes
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed,WiFi
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional Wireless or Wired Via Wi-Fi
Connections (extended): Type-C Mini HDMI (BRAVIA Sync, PhotoTV HD); Wired Remote Terminal, 3.5mm External Stereo Micophone Jack, DC Input Micro HDMI (Type D)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.90
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   1.25
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 10.0 6.6
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 14
RAW shooting speed in burst mode (fps):   1.2
Buffer size for RAW shooting in burst mode (frames):   4
RAW+JPEG shooting speed in burst mode (fps):   1.0
Buffer Size for RAW+JPEG shooting in burst mode (frames):   2
Shutter lag (full AF, wide/mid):   0.20 seconds
Shutter lag (full AF, tele):   0.18 seconds
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.219 seconds
Shutter lag (full AF, with flash):   0.89 seconds
Shutter Lag (prefocused):   0.097 seconds
Shutter Lag (notes):    
Startup Time:   1.7 seconds
Play -> Record Time:   1.4 seconds
Flash cycle time, full power:   6.2 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   210 shots
Battery Life, Still (CIPA Rating OVF/EVF): 550 shots  
Battery Life, Video:   40 minutes
Battery Form Factor: Proprietary Proprietary NB-13L
Usable Battery Types: NP-FM500H Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FM500H Lithium-ion rechargeable 1 x Proprietary NB-13L Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes Yes
Internal Charging Supported: No No
Software
Included Software: Sony Software CD-ROM  
OS Compatibility: Windows XP SP3/Vista SP2/7, Mac OS X (v.10.3 +)  
Miscellaneous
Notes & Features: SteadyShot INSIDE Sensor-shift Image Stabilization (up to 4.5 EV correction), Full HD 1080p60 Video, Up to 12 fps Burst Mode (Tele-zoom Continuous Advance Priority AE), Enhanced Object Tracking AF, 2x Clear Image Digital Zoom, New Auto Portrait Framing, Tilting 921K-dot LCD, 1.44M-dot EVF. 1"-type 20.2MP sensor, f/1.8-2.8 4.2x zoom lens, DIGIC 6 image processor, 1040K-dot tilting touchscreen, 1080p60 videos, built-in Wi-Fi.