• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • APS-C 369.7mm2
  • 14.6 megapixels
  •  
  • Detailed specifications
  • Pentax K-x
  • Samsung NX100
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax K2000
K2000 vs K-x
 
Successor: Pentax K-r
K-x vs K-r
Samsung NX200
NX100 vs NX200
General
Model Number: K-x NX100
Alternate Model Number(s):    
Camera Format: SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $649.95 $599.99
Street Price: $701.76 $798.62
Date Available: 2009-10-15 2010-10-15
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens
16.3 oz (463 g)
includes batteries, kit lens
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm)
4.7 x 2.8 x 1.4 in.
(121 x 71 x 35 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Samsung
Effective Megapixels: 12.4 14.6
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 5.16 microns
Focal Length Multiplier: 1.5x n/a
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Fixed
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 72 62
DxO Color Depth Score (bits): 22.8 22.6
DxO Dynamic Range Score (evs): 12.5 10.7
DxO Maximum Effective ISO Score (iso): 811 563
Image Capture
Image Resolution: 4288 x 2848 (12.2 MP, Other),
3936 x 2624 (10.3 MP, 3:2),
3072 x 2048 (6.3 MP, 3:2),
1728 x 1152 (2.0 MP, 3:2)
4592 x 3056 (14.0 MP, 3:2),
4592 x 2584 (11.9 MP, 16:9),
3872 x 2592 (10.0 MP, Other),
3872 x 2176 (8.4 MP, 16:9),
3008 x 2000 (6.0 MP, 3:2),
3008 x 1688 (5.1 MP, 16:9),
1920 x 1280 (2.5 MP, 3:2),
1920 x 1080 (2.1 MP, 16:9),
1472 x 976 (1.4 MP, Other)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) JPEG (EXIF 2.2), RAW (.SRW)
Continuous-mode frames/second: 4.3 2.9
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24)
1280x720 (30)
640x480 (30)
320x240 (30)
Movie File Format:   H.264 .MP4
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No
HD Video Out: No Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2/3) Samsung NX
Lens: smc Pentax DA L 18-55mm f/3.5-5.6 AL Samsung iFunction 20-50mm f/3.5-5.6 ED
Focal Length (35mm equivalent): 27 - 84mm 31 - 77mm
Focal Length (actual): 18 - 55mm 20 - 50mm
Zoom Ratio: 3.00x 2.50x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/3.5 (W) / f/5.6 (T) - f/22
Integrated ND Filter: No No
Normal Focus Range:    
Macro Focus Range:    
Filter Thread: 52.0mm 40.5mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No
Digital Zoom Values: n/a  
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: SAFOX VIII TTL phase-detect 11 point (9 cross) AF: 11 pt auto, 5 pt auto, AF pt select, center/spot Contrast detection
Auto Focus Assist Light? Yes No
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD No / LCD
Viewfinder Type: SLR type; fixed eye-level pentamirror, 96% coverage, 0.85x mag., -2.5 to +1.5 diopter Optional EVF: 201Kdot (QVGA), 98% coverage, 0.83x magnification, 17mm eyepoint, -4 to +1 diopter
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.57x 0.55x
Viewfinder Magnification (nominal/claimed): 0.85x 0.83x
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 614,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x  
Top Deck Display: No No
Exposure
Maximum ISO (native): 6400  
Minimum ISO (native): 200  
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 100 - 3200; expandable to 6400
Auto ISO Mode: Yes No
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom Auto, Daylight, Cloudy, Fluorescent (W, N, D), Tungsten, Flash, Custom, K (Manual)
Shutter Speed Range: 1/6000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: 16-segment Multi, Center-weighted, Spot Multi, center-weighted, spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Auto Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Standard Flash Off), Scene (Night Scene, Surf & Snow, Food, Sunset, Kids, Pet, Candlelight, Museum, Stage Lighting [JPG], Night Snap [JPG]), Sensitivity Priority SmartAuto, Lens Priority, Beauty shot, Children, Close Up, Text, Sunset, Dawn, Backlight, Fireworks, Beach & Snow, Night, Portrait, Landscape, Sports, Sound Picture
Self Timer: 2 or 12 seconds 2-30 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless n/a
Flash Guide Number (ISO 100): 11.3 m / 37.1 ft. n/a
Flash Range Description: Depends on lens n/a
Max Flash Sync: 1/180 1/180
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps  
External Flash Connection: Hot Shoe Hot shoe
Built-In Wireless Flash Control: Full TTL exposure  
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) RAW (.SRW)
Movie File Format:   H.264 .MP4
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No
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: No Yes
DPOF Compliant: Yes Yes
Remote Control: Yes
Remote Control Type: Optional IR  
Connections (extended): AC adapter available Accessory port for optional EVF or GPS module (GPS10)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39 1.06
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.43 1.05
Buffer size for RAW shooting in single shot mode (frames): 10 6
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No Yes
JPEG shooting speed in burst mode (fps, max resolution): 4.3 2.9
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 8
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): 0.10 seconds 0.43 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.082 seconds 0.122 seconds
Shutter lag (full AF, with flash): 0.23 seconds  
Shutter Lag (prefocused): 0.082 seconds 0.107 seconds
Shutter Lag (notes): Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s Full AF Multi-area shutter lag = 0.444s
Startup Time: 0.6 seconds 1.1 seconds
Play -> Record Time: 0.2 seconds 0.7 seconds
Flash cycle time, full power: 3.3 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   420 shots
Battery Life, Still (CIPA Rating OVF/EVF): 420 shots (NiMH AA)  
Battery Life, Video:    
Battery Form Factor: 4 x AA Proprietary BP-1310
Usable Battery Types: Lithium, Alkaline disposables; NiMH rechargeables Lithium-ion rechargeable
Batteries Included: 4 x AA Alkaline disposables 1 x Proprietary Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): No Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: CD-ROM  
OS Compatibility: Windows XP/Vista/7, MacOS-X 10.3+ Windows XP / Vista / 7; Mac OS 10.4 or later
Miscellaneous
Notes & Features: Sensor-shift shake reduction, 720p HD video capture, Live View with face detection. Available in black or white. Limited edition colors of red and navy will become available at select locations to be announced. iFunction lenses allow shutter speed, aperture, EV, WB, and ISO setting changes from lens; Smart Filters, 720p HD movies, 3-inch AMOLED screen, Geo-tagging w/ optional GPS module (GPS10). Available in black and brown.