• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • 1/2 inch 30.7mm2
  • 16.0 megapixels
  • 25.00mm - 500.00mm (35mm eq.)
  • Detailed specifications
  • Pentax K-x
  • Fujifilm FinePix F850EXR
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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 F850EXR
Alternate Model Number(s):    
Camera Format: SLR Compact
Currently Manufactured: No No
Retail Price: $649.95 $299.95
Street Price: $701.76 $279.95
Date Available: 2009-10-15 2013-03-15
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens 		8.1 oz (230 g)
includes batteries
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm) 		4.1 x 2.5 x 1.4 in.
(105 x 63 x 36 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Fujifilm
Effective Megapixels: 12.4 16.0
Sensor Format: APS-C 1/2 inch
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 30.72mm2 (6.4mm x 4.8mm)
Approximate Pixel Pitch: 5.53 microns 1.39 microns
Focal Length Multiplier: 1.5x n/a
Aspect Ratio: 3:2 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed  
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes Yes
On-Sensor Phase Detect: No No
DxO Sensor Score: 72  
DxO Color Depth Score (bits): 22.8  
DxO Dynamic Range Score (evs): 12.5  
DxO Maximum Effective ISO Score (iso): 811  
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) 		4608 x 3456 (15.9 MP, 4:3),
4608 x 3072 (14.2 MP, 3:2),
4608 x 2592 (11.9 MP, 16:9),
3264 x 2448 (8.0 MP, 4:3),
3264 x 2176 (7.1 MP, 3:2),
3264 x 1840 (6.0 MP, Other),
2304 x 1728 (4.0 MP, 4:3),
2304 x 1536 (3.5 MP, 3:2),
1920 x 1080 (2.1 MP, 16:9),
11520 x 1624 (18.7 MP, Other),
11520 x 1080 (12.4 MP, Other),
5760 x 1624 (9.4 MP, Other),
5760 x 1080 (6.2 MP, Other),
3840 x 1624 (6.2 MP, Other),
3840 x 1080 (4.1 MP, Other)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) JPEG (EXIF 2.3)
Continuous-mode frames/second: 4.3 9.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24) 		1920x1080 (60)
1280x720 (60)
640x480 (30)
Movie File Format:   .MOV (H.264) with stereo 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) n/a
Lens: smc Pentax DA L 18-55mm f/3.5-5.6 AL Fujinon Zoom with Super EBC Coating ; 14 elements in 11 groups
Focal Length (35mm equivalent): 27 - 84mm 25 - 500mm
Focal Length (actual): 18 - 55mm 4.6 - 92mm
Zoom Ratio: 3.00x 20.00x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/3.5/7.1/10.0 (Wide), f/5.3/11.0/16.0 (Tele); with ND filter
Integrated ND Filter: No No
Normal Focus Range:   45 cm to Infinity
17.7 in to Infinity
Macro Focus Range:   5 - 300 cm
2.0 - 118.1 in
Filter Thread: 52.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 2x Intelligent Digital Zoom ; Other than EXR Auto mode: Intelligent digital zoom approx. 3.4x
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 Intelligent Hybrid AF: TTL Contrast AF, TTL Phase Detection AF; Center, Multi, Tracking
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes No
Viewfinder
Viewfinder: Optical / LCD 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 920,000 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
Exposure
Maximum ISO (native): 6400  
Minimum ISO (native): 200  
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 Auto, Equivalent to ISO 100, 200, 400, 800, 1600, 3200, 6400*, 12800*; * ISO 6400 : M mode or lower, ISO 12800 : S mode
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom Auto,Fine, Shade, Fluorescent light (Daylight), Fluorescent light (Warm White), Fluorescent light (Cool White), Incandescent light, Underwater, Custom
Shutter Speed Range: 1/6000 - 30 sec 1/2000 - 8 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: 16-segment Multi, Center-weighted, Spot TTL 256-zone Multi, Spot, Average
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 EXR mode (EXR Auto, Resolution priority, High ISO & Low noise priority, Dynamic range priority); Scene mode (Portrait, Portrait enhancer, Landscape, Sport, Night, Night (Tripod), Fireworks, Sunset, Snow, Beach, Underwater, Party, Flower, Text); Adv. mode (Advanced Filter: Toy Camera, Miniature, Pop Color, High-Key, Low-Key, Dynamic Tone, Soft Focus, Partial Color, Motion panorama 360, Pro focus, Pro low light, Multiple exposure); High Speed Movie (80/ 160 / 320 fps), Advanced Anti Blur, Film Simulation (PROVIA/STANDARD, Velvia/VIVID, ASTIA/SOFT), Dynamic Range (100%, 200%, 400%)
Self Timer: 2 or 12 seconds 2, 10, Auto release 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 Auto, Forced Flash, Suppressed Flash, Slow Synchro, Red-eye Reduction Auto, Red-eye Reduction & Forced Flash, Suppressed Flash, Red-eye Reduction & Slow Synchro
Flash Guide Number (ISO 100): 11.3 m / 37.1 ft. n/a
Flash Range Description: Depends on lens Auto ISO: Wide : Approx. 15cm - 3.7m / 0.5ft. - 12.1ft.; Approx. 90cm - 2.4m / 2.9ft. - 7.8ft.
Max Flash Sync: 1/180  
Flash Exposure Compensation: -2 to +1 EV in 0.5EV 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:   UHS-I
Other Memory:   UHS-I compliant
Dual Card Slots: No No
RAW Capture Support: Yes No
Uncompressed Format: 12-bit RAW (.PEF, .DNG)  
Movie File Format:   .MOV (H.264) with stereo sound
Included Memory: No memory included 21.0 MB
Included Memory Type:   built-in memory
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 No
Remote Control Type: Optional IR  
Connections (extended): AC adapter available Mini (Type C) HDMI
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39  
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.43  
Buffer size for RAW shooting in single shot mode (frames): 10  
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): 4.3 9.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 5
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  
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  
Shutter lag (full AF, with flash): 0.23 seconds  
Shutter Lag (prefocused): 0.082 seconds  
Shutter Lag (notes): Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s  
Startup Time: 0.6 seconds  
Play -> Record Time: 0.2 seconds  
Flash cycle time, full power: 3.3 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   250 shots
Battery Life, Still (CIPA Rating OVF/EVF): 420 shots (NiMH AA)  
Battery Life, Video:    
Battery Form Factor: 4 x AA Proprietary NP-50A
Usable Battery Types: Lithium, Alkaline disposables; NiMH rechargeables Lithium-ion rechargeable
Batteries Included: 4 x AA Alkaline disposables 1 x Proprietary NP-50A 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+  
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. 1/2-inch EXR CMOS Sensor, Sensor-shift Image Stabilization, Full HD Movies. Available in black.