• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • 1 inch 116.2mm2
  • 10.1 megapixels
  • ISO 100 - 3200
  • Detailed specifications
  • Pentax K-x
  • Nikon J1
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax K2000
K2000 vs K-x
 
Successor: Pentax K-r
K-x vs K-r
 
General
Model Number: K-x J1
Alternate Model Number(s):    
Camera Format: SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $649.95 $649.95
Street Price: $701.76 $499.95
Date Available: 2009-10-15 2011-10-20
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens
14.0 oz (396 g)
includes batteries, kit lens
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm)
4.2 x 2.4 x 1.2 in.
(106 x 61 x 30 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Aptina
Effective Megapixels: 12.4 10.1
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: 5.53 microns 3.41 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 Yes
DxO Sensor Score: 72 56
DxO Color Depth Score (bits): 22.8 21.5
DxO Dynamic Range Score (evs): 12.5 11.0
DxO Maximum Effective ISO Score (iso): 811 372
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)
3872 x 2592 (10.0 MP, Other),
2896 x 1944 (5.6 MP, Other),
1936 x 1296 (2.5 MP, Other),
3840 x 2160 (8.3 MP, 16:9),
1920 x 1080 (2.1 MP, 16:9),
1280 x 720 (0.9 MP, 16:9),
3840 x 2160 (8.3 MP, 16:9)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) JPEG (Exif 2.3), 12-bit NEF RAW, RAW+JPG
Continuous-mode frames/second: 4.3 57.9
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24)
1920x1080 (60i/​30p)
1280x720 (60p)
640x240 (400)
320x120 (1200)
Movie File Format:   MOV H.264/MPEG-4 AVC with AAC sound
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: No n/a
HD Video Out: No Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2/3) Nikon 1
Lens: smc Pentax DA L 18-55mm f/3.5-5.6 AL 1 Nikkor 10-30mm f/3.5-5.6 VR
Focal Length (35mm equivalent): 27 - 84mm 27 - 81mm
Focal Length (actual): 18 - 55mm 10 - 30mm
Zoom Ratio: 3.00x 3.00x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/3.5 (W)- f/5.6 (T)
Integrated ND Filter: No No
Normal Focus Range:   20 cm to Infinity
7.9 in to Infinity
Macro Focus Range:    
Filter Thread: 52.0mm 40.5mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No No
Digital Zoom Values: n/a 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 Hybrid autofocus (phase detection/contrast-detect AF); Single-point (135 focus areas), auto-area (41 focus areas), subject tracking
Auto Focus Assist Light? Yes Yes
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  
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.57x  
Viewfinder Magnification (nominal/claimed): 0.85x  
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 460,000 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 3200
Minimum ISO (native): 200 100
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 Auto ISO (100-3200, 100-800, 100-400); 100, 200, 400, 800, 1600, 3200; expandable to 6400 Hi-1
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom Auto, incandescent, fluorescent, direct sunlight, flash, cloudy, shade, preset manual, all except preset manual with fine tuning
Shutter Speed Range: 1/6000 - 30 sec 1/16000 - 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 Matrix, Center-weighted (4.5mm), Spot (2mm)
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 Scene Auto Selector can select from: Portrait, Landscape, Night portrait, Close up, Auto.
Self Timer: 2 or 12 seconds 2, 5, 10 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless Fill flash, slow sync, red-eye reduction, slow sync with red-eye reduction, rear-curtain sync, rear curtain with slow sync
Flash Guide Number (ISO 100): 11.3 m / 37.1 ft. 5.0 m / 16.4 ft.
Flash Range Description: Depends on lens Lens dependent.
Max Flash Sync: 1/180 1/60
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps -3 to +1 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: SD / SDHC SD / SDHC / SDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) 12-bit NEF RAW, RAW+JPG
Movie File Format:   MOV H.264/MPEG-4 AVC with AAC sound
Included Memory: No memory included 0.0 MB
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No 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 Yes
Remote Control Type: Optional IR Optional ML-L3
Connections (extended): AC adapter available HDMI out (Type C, Mini)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39 1.44
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.43 1.48
Buffer size for RAW shooting in single shot mode (frames): 10 Unlimited
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 57.9
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 12
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 0.09 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 0.072 seconds
Shutter lag (full AF, with flash): 0.23 seconds 0.29 seconds
Shutter Lag (prefocused): 0.082 seconds 0.074 seconds
Shutter Lag (notes): Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s Full Autofocus lag: Auto-area AF mode = 0.232s
Startup Time: 0.6 seconds 1.4 seconds
Play -> Record Time: 0.2 seconds 0.5 seconds
Flash cycle time, full power: 3.3 seconds 1.8 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   230 shots
Battery Life, Still (CIPA Rating OVF/EVF): 420 shots (NiMH AA)  
Battery Life, Video:    
Battery Form Factor: 4 x AA Proprietary EN-EL20
Usable Battery Types: Lithium, Alkaline disposables; NiMH rechargeables Lithium-ion rechargeable
Batteries Included: 4 x AA Alkaline disposables 1 x Proprietary EN-EL20 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 ViewNX 2 / Short Movie Creator CD-ROM
OS Compatibility: Windows XP/Vista/7, MacOS-X 10.3+  
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. New "Nikon CX format" compact system camera. New Nikon 1 lens mount, 2.7x crop factor, dual core EXPEED 3 processor, new advanced hybrid AF system, Full HD movies, up to 60fps burst at full resolution. Available in white, pink, red, silver, black.