• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • APS-C 368.2mm2
  • 24.3 megapixels
  • 35.00mm (35mm eq.)
  • Detailed specifications
  • Pentax K-x
  • Fujifilm X100F
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax K2000
K2000 vs K-x
Fujifilm X100T
X100T vs X100F
Successor: Pentax K-r
K-x vs K-r
Fujifilm X100V
X100F vs X100V
General
Model Number: K-x X100F
Alternate Model Number(s):    
Camera Format: SLR Mid-Sized
Currently Manufactured: No Yes
Retail Price: $649.95 $1299.95
Street Price: $701.76 $899.00
Date Available: 2009-10-15 2017-02-15
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens
16.5 oz (469 g)
includes batteries
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm)
5.0 x 2.9 x 2.1 in.
(127 x 75 x 52 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:    
Effective Megapixels: 12.4 24.3
Sensor Format: APS-C APS-C
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 368.16mm2 (23.60mm x 15.60mm)
Approximate Pixel Pitch: 5.53 microns 3.93 microns
Focal Length Multiplier: 1.5x 1.5x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG X-Trans 3
Anti Aliasing Filter: Fixed Not needed
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No Yes
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)
6000 x 4000 (24.0 MP, 3:2),
6000 x 3376 (20.3 MP, 16:9),
4000 x 4000 (16.0 MP, 1:1),
4240 x 2832 (12.0 MP, 3:2),
4240 x 2384 (10.1 MP, 16:9),
2832 x 2832 (8.0 MP, 1:1),
3008 x 2000 (6.0 MP, 3:2),
3008 x 1688 (5.1 MP, 16:9),
2000 x 2000 (4.0 MP, 1:1),
9600 x 1440 (13.8 MP, Other),
2160 x 9600 (20.7 MP, Other),
6400 x 1440 (9.2 MP, Other),
2160 x 6400 (13.8 MP, Other)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) JPEG (EXIF 2.3), 14-bit .RAF RAW, RAW+JPEG
Continuous-mode frames/second: 4.3 8.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24)
1920x1080 (60p/​50p/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p)
Movie File Format:   MOV (MPEG-4 AVC / H.264, Audio: Linear PCM 48KHz 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 Fixed Fujinon Apsherical lens; 8 elements in 6 groups, Super EBC coating
Focal Length (35mm equivalent): 27 - 84mm 35mm
Focal Length (actual): 18 - 55mm 23mm
Zoom Ratio: 3.00x 1.00x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/2 - f/16 (9 blade aperture diaphram with built-in 3-stop ND filter)
Integrated ND Filter: No Yes
Normal Focus Range:   80 cm to Infinity
31.5 in to Infinity
Macro Focus Range:   10 - 200 cm
3.9 - 78.7 in
Filter Thread: 52.0mm 49.0mm
Thread Type: n/a body threads w/ adapter
Optical Image Stabilization: No No
Digital Zoom: No Yes
Digital Zoom Values: n/a Digital teleconverter: 50mm and 70mm equivalent
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 (Contrast Detect AF/Phase Detect AF): Single point AF? EVF/LCD/OVF: 13 x 7 / 25 x 13 [Changeable size of AF frame among 5 types]; Zone AF? 3 x 3 / 5 x 5 / 7 x 7 from 91 areas on 13 x 7 grid; Wide/Tracking AF? Up to 9 area; Single AF / Continuous AF / MF
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD Hybrid / LCD
Viewfinder Type: SLR type; fixed eye-level pentamirror, 96% coverage, 0.85x mag., -2.5 to +1.5 diopter Advanced Hybrid Optical/Electronic. Optical: Reverse Galilean viewfinder with electronic bright frame display, 0.5x magnification, ~92% coverage; EVF: 0.48-inch, 2360K-dot LCD, ~100% coverage; 0.65x magnification, electronic rangefinder, 15mm eyepoint, -2 to +1 diopter, built-in eye sensor
Focus Peaking: No Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.57x 0.50x
Viewfinder Magnification (nominal/claimed): 0.85x  
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 1,036,800 dots (345,600 px)
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 12800
Minimum ISO (native): 200 200
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 Auto, 200-12800, expandable to 100, 25600 and 51200
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom Auto, Daylight, Shade, Fluorescent light (Daylight, Warm White, Cool White), Incandescent light, Underwater, Custom, Color Temperature
Shutter Speed Range: 1/6000 - 30 sec 1/32000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: 16-segment Multi, Center-weighted, Spot TTL 256-zone metering: Multi, Spot, Average, Center Weighted
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 Film Simulation (PROVIA/Standard?Velvia/Vivid?ASTIA/Soft?Classic Chrome?PRO Neg.Hi?PRO Neg.Std?Black&White?Black&White+Ye Filter?Black&White+R Filter?Black&White+G Filter?Sepia?ACROS?ACROS+Ye Filter?ACROS+R Filter?ACROS+G Filter), Advanced Filter (Pop Color, Toy Camera, Miniature, Dynamic Tone, Partial Color, High Key, Low Key, Soft Focus), Multiple Exposure, Motion Panorama.
Self Timer: 2 or 12 seconds 10 or 2 seconds
Time Lapse (intervalometer):   Yes
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 TTL (Flash Auto / Standard / Slow Sync.), Manual, Commander, Off; Sync: 1st Curtain, 2nd Curtain; Red-eye Reduction pre-flash & Red-eye removal, Red-eye Reduction pre-flash Only, Red-eye removal Only, Off
Flash Guide Number (ISO 100): 11.3 m / 37.1 ft. 4.6
Flash Range Description: Depends on lens ISO 1600: 50cm - 9m / 1.6 ft to 29.5 ft
Max Flash Sync: 1/180 1/2000
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps +/- 2.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe Hot shoe
Built-In Wireless Flash Control: Full TTL exposure Trigger Only
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) 14-bit .RAF RAW, RAW+JPEG
Movie File Format:   MOV (MPEG-4 AVC / H.264, Audio: Linear PCM 48KHz stereo sound)
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No Yes
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed,WiFi
PictBridge Compliant: No Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional IR Wi-Fi, optional wired remote, mechanical shutter release cable
Connections (extended): AC adapter available Micro (Type D) HDMI; WiFi IEEE 802.11b/g/n; 2.5mm stereo mini jack for external mic or remote; Screw-in mechanical shutter release cable socket
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39 <0.3
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):   <0.3
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 4.3 8.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 49
RAW shooting speed in burst mode (fps):   8.0
Buffer size for RAW shooting in burst mode (frames):   30
RAW+JPEG shooting speed in burst mode (fps):   8.0
Buffer Size for RAW+JPEG shooting in burst mode (frames):   25
Shutter lag (full AF, wide/mid): 0.10 seconds 0.25 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 0.034 seconds
Shutter lag (full AF, with flash): 0.23 seconds 0.37 seconds
Shutter Lag (prefocused): 0.082 seconds 0.014 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 1.4 seconds
Play -> Record Time: 0.2 seconds 1.0 seconds
Flash cycle time, full power: 3.3 seconds 4.6 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   270 shots
Battery Life, Still (CIPA Rating OVF/EVF): 420 shots (NiMH AA) 390 shots
Battery Life, Video:   60 minutes
Battery Form Factor: 4 x AA Proprietary NP-W126
Usable Battery Types: Lithium, Alkaline disposables; NiMH rechargeables Lithium-ion rechargeable
Batteries Included: 4 x AA Alkaline disposables 1 x Proprietary NP-W126 lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): No Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: Yes
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. Available in silver or black.