• APS-C 369.7mm2
  • 20.3 megapixels
  • ISO 100 - 12,800
  • 1/3 inch 17.3mm2
  • 10.1 megapixels
  • 29.00mm - 87.00mm (35mm eq.)
  • Detailed specifications
  • Samsung NX20
  • Nikon Coolpix S31
Links
Prices: Compare Prices  
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: NX20 S31
Alternate Model Number(s):    
Camera Format: Compact System Camera Compact
Currently Manufactured: No No
Retail Price: $1099.99 $119.95
Street Price: $399.99 $89.00
Date Available: 2012-05-05 2013-02-15
Tripod Mount: Yes Yes
Weight: 22.5 oz (637 g)
includes batteries, kit lens
6.5 oz (185 g)
includes batteries
Size: 4.8 x 3.5 x 1.6 in.
(122 x 90 x 40 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: CMOS CCD
Sensor Manufacturer: Samsung  
Effective Megapixels: 20.3 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: 4.33 microns 1.32 microns
Focal Length Multiplier: 1.5x n/a
Aspect Ratio: 3:2 4:3
Color Filter Type: RGBG  
Anti Aliasing Filter: Fixed  
Self-Cleaning: Yes No
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No No
DxO Sensor Score: 75  
DxO Color Depth Score (bits): 23.4  
DxO Dynamic Range Score (evs): 12.9  
DxO Maximum Effective ISO Score (iso): 785  
Image Capture
Image Resolution: 5472 x 3648 (20.0 MP, 3:2),
5472 x 3080 (16.9 MP, 16:9),
3648 x 3648 (13.3 MP, 1:1),
3888 x 2592 (10.1 MP, 3:2),
3712 x 2088 (7.8 MP, 16:9),
2640 x 2640 (7.0 MP, 1:1),
2976 x 1984 (5.9 MP, 3:2),
2736 x 1824 (5.0 MP, 3:2),
2944 x 1656 (4.9 MP, 16:9),
2000 x 2000 (4.0 MP, 1:1),
1920 x 1080 (2.1 MP, 16:9),
1728 x 1152 (2.0 MP, 3:2),
1024 x 1024 (1.0 MP, 1:1)
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 (EXIF 2.21), .SRW 12-bit RAW JPEG
Continuous-mode frames/second: 7.5 1.5
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (30p)
1920x810 (24p)
1280x720 (30p)
640x480 (30p)
320x240 (30p)
1280x720 (30p)
Movie File Format: MP4 (H.264) with AAC audio  
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder:
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Samsung NX n/a
Lens: Samsung 18-55mm f/3.5-5.6 OIS NX NIKKOR; 6 elements in 5 groups
Focal Length (35mm equivalent): 27 - 84mm 29 - 87mm
Focal Length (actual): 18 - 55mm 4.1 - 12.3mm
Zoom Ratio: 3.06x 3.00x
Aperture Range: f/3.5 (wide) / f/5.6 (tele) - f/22 f/3.3 (wide) / f/5.9 (tele) - ???
Integrated ND Filter: No No
Normal Focus Range: 28 cm to Infinity
11.0 in to Infinity
30 cm to Infinity
11.8 in to Infinity
Macro Focus Range:   5 cm to Infinity
2.0 in to Infinity
Filter Thread: 58.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: Yes No
Digital Zoom: Yes Yes
Digital Zoom Values: Up to 2x i-Zoom Up to 4x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 15-point Contrast Detection; has single-point and 35-point closeup modes; Face Detection : Max. 10 faces Contrast Detection: Center, Face detection
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes No
Viewfinder
Viewfinder: EVF / OLED LCD
Viewfinder Type: EVF type with Eye Contact Sensor; SVGA (800 x 600) TFT-LCD; Coverage: Approx. 100%; Magnification: Approx. 1.04X (APS-C, 50mm, -1m-1), Approx. 0.68X (Equivalent to a 50mm lens on a 35mm camera); Eyepoint: Approx. 18.0mm; Diopter Adjustment: -4.0 to +4.0m-  
Focus Peaking: No No
EVF Resolution: 1,440,000 dots (480,000 pixels) 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 2.7
Rear Display Resolution: 614,400 dots 230,000 dots
Touchscreen: No No
Articulating Screen: Yes No
Tilt Swivel Screen: No
Selfie Screen: No
Max Playback Zoom:    
Top Deck Display: No
Exposure
Maximum ISO (native): 12800  
Minimum ISO (native): 100  
ISO Settings: Auto (100-3200), 100, 200, 400, 800, 1600, 3200, 6400, 12800 (1 or 1/3 EV steps) Auto, 80, 100, 200, 400, 800, 1600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Cloudy, White Fluorescent, Neutral Fluorescent, Daylight Fluorescent, Tungsten, Flash, Custom, Kelvin Color Temp., 7-step A/B + G/M adjust Auto
Shutter Speed Range: 1/8000 - 30 sec 1/2000 - 4 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: 221-segment Multi, 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: Scene: Panorama (Live, 3D), Beauty shot, Night, Landscape, Portrait, Children, Sports, Close-Up, Text, Sunset, Dawn, Backlight, Fireworks, Beach & Snow, Sound Picture, 3D Photo; Smart Filter: Vignetting, Miniature, Fish-Eye, Sketch, De-fog, Halftone Dots, Soft Focus, Old Film1, Old Film2, Negative, Selective Color (4 Color Modes); Magic Frame: Old Album, Old Film, Wave, Full Moon, Old Record, Magazine, Sunny Day, Classic TV, Wall Art, Holiday, Billboard 1, Billboard 2, Newspaper Close Up, Continuous shooting, Diorama effect, Fireworks Show, Food, Interval shooting, Mirror, Underwater, Soft
Self Timer: 2-30 sec in 1 sec steps seconds 10, smile seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Smart Flash, Auto, Auto+Red-eye reduction, Fill-in, Fill-in+Red-eye reduction, 1st Curtain, 2nd Curtain, Off Auto, Auto w/ Red-eye Reduction, Flash Off, Flash On, w/ Red-eye Reduction, Flash Off
Flash Guide Number (ISO 100): 11.0 m / 36.1 ft. n/a
Flash Range Description: Depends on lens aperture 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: 1/180  
Flash Exposure Compensation: +/- 2.0 EV in 0.5EV steps  
External Flash Connection: Hot shoe n/a
Built-In Wireless Flash Control: No  
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes No
Uncompressed Format: .SRW 12-bit RAW  
Movie File Format: MP4 (H.264) with AAC audio  
Included Memory: No memory included 25.0 MB
Included Memory Type:   Internal
Connectivity
Built-In Wi-Fi: Yes 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,WiFi USB 2.0 High Speed
PictBridge Compliant: Yes No
DPOF Compliant: Yes Yes
Remote Control: Yes
Remote Control Type: Optional wired (SR2NX02)  
Connections (extended): Micro (Type D) HDMI, Combined AV/USB/Remote Micro USB Port  
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 1.40  
Cycle time for RAW shooting in single shot mode (seconds per frame): 1.32  
Buffer size for RAW shooting in single shot mode (frames): 4  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 7.5 1.5
Buffer size for JPEG shooting in burst mode (frames, max resolution): 11 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): 0.35 seconds  
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.060 seconds  
Shutter lag (full AF, with flash): 0.62 seconds  
Shutter Lag (prefocused): 0.044 seconds  
Shutter Lag (notes): Full AF Shutter Lag, Wide Area mode = 0.650s  
Startup Time: 3.0 seconds  
Play -> Record Time: 0.9 seconds  
Flash cycle time, full power: 3.6 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 360 shots 260 shots
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary BP1310 Proprietary EN-EL12
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary BP1310 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: intelli-studio 3.0, Samsung RAW Converter 4, PC Auto Backup, Adobe Reader Nikon ViewNX 2 CD-ROM
OS Compatibility: Windows, Mac OS (except intelli-studio) Windows, Mac OS
Miscellaneous
Notes & Features: Built-in Wi-Fi (IEEE 802.11b/g/n support, Mobile Link, Remote Viewfinder, Social Sharing, Email, Cloud , Auto Backup, TV Link, Wi-Fi Direct), supports geotagging w/ optional WGS84 GPS Module. Waterproof (up to 16.4 feet), Shockproof (up to 3.9 feet) and Dustproof. Available in White, Blue, Pink, Brown or Yellow.