• APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 100 - 3200
  • 1/3 inch 17.3mm2
  • 10.1 megapixels
  • 29.00mm - 87.00mm (35mm eq.)
  • Detailed specifications
  • Sony Alpha DSLR-A290
  • Nikon Coolpix S31
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: DSLR-A290 S31
Alternate Model Number(s):    
Camera Format: SLR Compact
Currently Manufactured: No No
Retail Price: $499.99 $119.95
Street Price:   $89.00
Date Available: 2010-07-15 2013-02-15
Tripod Mount: Yes Yes
Weight: 17.9 oz (508 g)
includes batteries
6.5 oz (185 g)
includes batteries
Size: 5.0 x 3.8 x 3.1 in.
(128 x 97 x 80 mm)
4.1 x 2.6 x 1.6 in.
(105 x 65 x 42 mm)
Waterproof: No Yes
Waterproof Depth: n/a  
Image Sensor
Sensor Type: CCD CCD
Sensor Manufacturer: Sony  
Effective Megapixels: 14.2 10.1
Sensor Format: APS-C 1/3 inch
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 17.28mm2 (4.8mm x 3.6mm)
Approximate Pixel Pitch: 5.16 microns 1.32 microns
Focal Length Multiplier: 1.5x n/a
Aspect Ratio: 3:2, 16:9 4:3
Color Filter Type: RGBG  
Anti Aliasing Filter: Fixed  
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 66  
DxO Color Depth Score (bits): 22.6  
DxO Dynamic Range Score (evs): 11.5  
DxO Maximum Effective ISO Score (iso): 615  
Image Capture
Image Resolution: 4592 x 3056 (14.0 MP, 3:2),
4592 x 2576 (11.8 MP, 16:9),
3408 x 2272 (7.7 MP, 3:2),
3408 x 1920 (6.5 MP, 16:9),
2288 x 1520 (3.5 MP, Other),
2288 x 1280 (2.9 MP, Other)
3648 x 2736 (10.0 MP, 4:3),
2272 x 1704 (3.9 MP, 4:3),
1600 x 1200 (1.9 MP, 4:3)
Image File Format: JPEG, RAW JPEG
Continuous-mode frames/second: 2.4 1.5
Video Capture
Can take movies: No Yes
Movie Resolution: 1280x720 (30p)
Movie File Format:    
Composite Video Out: No Yes
NTSC/PAL Switchable Video: n/a Yes
Video Usable as Viewfinder: n/a
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Sony Alpha (Minolta A) n/a
Lens: Sony 18-55mm f/3.5-5.6 DT SAM NIKKOR; 6 elements in 5 groups
Focal Length (35mm equivalent): 27 - 83mm 29 - 87mm
Focal Length (actual): 18 - 55mm 4.1 - 12.3mm
Zoom Ratio: 3.00x 3.00x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 36 (T) f/3.3 (wide) / f/5.9 (tele) - ???
Integrated ND Filter: No No
Normal Focus Range:   30 cm to Infinity
11.8 in to Infinity
Macro Focus Range:   5 cm to Infinity
2.0 in to Infinity
Filter Thread: 55.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 4x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 9-point TTL phase detection (one cross-type sensor) with eye-start AF Contrast Detection: Center, Face detection
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes No
Viewfinder
Viewfinder: Optical / LCD (playback only) LCD
Viewfinder Type: SLR type; eye-level pentamirror, 95% coverage, 0.83x mag., 16.5mm eyepoint, -2.5 to +1.0 diopter  
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.55x  
Viewfinder Magnification (nominal/claimed): 0.83x  
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 2.7
Rear Display Resolution: 230,400 dots 230,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 14.0x  
Top Deck Display: No
Exposure
Maximum ISO (native): 3200  
Minimum ISO (native): 100  
ISO Settings: Auto, 100, 200, 400, 800, 1600, 3200 Auto, 80, 100, 200, 400, 800, 1600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash, Custom Auto
Shutter Speed Range: 1/4000 - 30 sec 1/2000 - 4 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: 40-segment honeycomb pattern, center-weighted, spot Matrix, Center-weighted (digital zoom less than 2x), Spot (digital zoom 2X or more)
Program Auto Exposure: Yes Yes
Aperture Priority: Yes No
Shutter Priority: Yes No
Full Manual Exposure: Yes No
Creative Exposure Modes: Portrait, Landscape, Macro, Sports, Sunset, Night Portrait/Night View Close Up, Continuous shooting, Diorama effect, Fireworks Show, Food, Interval shooting, Mirror, Underwater, Soft
Self Timer: 2 or 10 seconds 10, smile seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off Auto, Auto w/ Red-eye Reduction, Flash Off, Flash On, w/ Red-eye Reduction, Flash Off
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: Lens dependent Auto ISO: [W]: 0.5 to 3.5m (1ft. 8 in. to 11 ft.) [T]: 0.5 to 2.0m (1ft 8 in. to 6 ft 6 in.)
Max Flash Sync: 1/160  
Flash Exposure Compensation: +/- 2.0 EV in 0.3EV steps  
External Flash Connection: Hot shoe n/a
Built-In Wireless Flash Control: Full TTL exposure  
Image Storage
Usable Memory Types: MS Duo / MS PRO Duo / SD / SDHC SD / SDHC / SDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes No
Uncompressed Format: RAW  
Movie File Format:    
Included Memory:   25.0 MB
Included Memory Type:   Internal
Connectivity
Built-In Wi-Fi: No No
NFC:
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
PictBridge Compliant: Yes No
DPOF Compliant: Yes Yes
Remote Control: Yes
Remote Control Type: Optional wireless  
Connections (extended): DC input, min-HDMI  
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.50  
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.46  
Buffer size for RAW shooting in single shot mode (frames): 5  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? Yes
JPEG shooting speed in burst mode (fps, max resolution): 2.4 1.5
Buffer size for JPEG shooting in burst mode (frames, max resolution): 18 4
RAW shooting speed in burst mode (fps):    
Buffer size for RAW shooting in burst mode (frames):    
RAW+JPEG shooting speed in burst mode (fps):    
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid): 0.20 seconds  
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.182 seconds  
Shutter lag (full AF, with flash): 0.22 seconds  
Shutter Lag (prefocused): 0.107 seconds  
Shutter Lag (notes): Full AF lag, Auto Area = 0.200s  
Startup Time: 0.5 seconds  
Play -> Record Time: 0.4 seconds  
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   260 shots
Battery Life, Still (CIPA Rating OVF/EVF): 500 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary NP-FH50 Proprietary EN-EL12
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FH50 Lithium-ion rechargeable 1 x Proprietary EN-EL12 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: Software/USB Driver CD-ROM Nikon ViewNX 2 CD-ROM
OS Compatibility: Windows 2000/XP/Vista/7, Mac OS X (v. 10.4+) Windows, Mac OS
Miscellaneous
Notes & Features: Waterproof (up to 16.4 feet), Shockproof (up to 3.9 feet) and Dustproof. Available in White, Blue, Pink, Brown or Yellow.