• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • 1/2 inch 30.7mm2
  • 16.0 megapixels
  • 24.00mm - 1000.00mm (35mm eq.)
  • Detailed specifications
  • Pentax K-x
  • Fujifilm FinePix HS50EXR
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 HS50EXR
Alternate Model Number(s):    
Camera Format: SLR EVF
Currently Manufactured: No No
Retail Price: $649.95 $549.95
Street Price: $701.76 $339.00
Date Available: 2009-10-15 2013-03-15
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens 		28.5 oz (808 g)
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm) 		5.3 x 4.0 x 5.7 in.
(135 x 101 x 146 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:    
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  
Anti Aliasing Filter: Fixed  
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) 		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), MPO (3D), RAW (.RAF), RAW+JPEG
Continuous-mode frames/second: 4.3 11.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24) 		1920x1080 (60p/​30p)
1280x720 (60p/​30p)
640x480 (60p/​30p)
640x480 (120p)
320x240 (240p)
320x112 (480p)
Movie File Format:   .MOV (H.264/MPEG-4) with stereo sound
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) n/a
Lens: smc Pentax DA L 18-55mm f/3.5-5.6 AL Fujinon Super EBC, 17 elements in 12 groups, Super EBC coating, manual zoom
Focal Length (35mm equivalent): 27 - 84mm 24 - 1,000mm
Focal Length (actual): 18 - 55mm 4.4 - 185mm
Zoom Ratio: 3.00x 42.00x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/2.8 (wide) / f/5.6 (tele) - f/11
Integrated ND Filter: No No
Normal Focus Range:   45 cm to Infinity
17.7 in to Infinity
Macro Focus Range:   1 - 100 cm
0.4 - 39.4 in
Filter Thread: 52.0mm 58.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 2.0x
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 Phase/Contrast Detect AF: Center, Multi, Area, Tracking
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD EVF / LCD
Viewfinder Type: SLR type; fixed eye-level pentamirror, 96% coverage, 0.85x mag., -2.5 to +1.5 diopter EVF type; 0.26-inch, 920K-dot color LCD, 100% coverage, with eye sensor
Focus Peaking: No Yes
EVF Resolution: n/a 920,000 dots
Viewfinder Magnification (35mm equivalent): 0.57x  
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 921,600 dots (307,200 px)
Touchscreen: No No
Articulating Screen: No Yes
Tilt Swivel Screen: No Yes
Selfie Screen: No Yes
Max Playback Zoom: 16.0x  
Top Deck Display: No No
Exposure
Maximum ISO (native): 6400 3200
Minimum ISO (native): 200 125
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 Auto, High, 125, 200, 400, 800, 1600, 3200, 6400*, 12800*; * ISO6400 : image size M or lower, ISO12800 : image size S
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, Custom
Shutter Speed Range: 1/6000 - 30 sec 1/4000 - 30 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-zones metering: 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 Scene modes (Portrait, Portrait Enhancer, Landscape, Sport, Night, Night (Tripod), Fireworks, Sunset, Snow, Beach, Party, Flower, Text); Advanced Filters (Toy Camera, Miniature, Pop Color, High-key, Low-key, Dynamic Tone, Partial Color, Soft Focus); Panorama, Film Simulation; Multiple Exposures
Self Timer: 2 or 12 seconds 2, 10, Auto 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, Red-eye Reduction & Slow Synchro
Flash Guide Number (ISO 100): 11.3 m / 37.1 ft. n/a
Flash Range Description: Depends on lens ISO Auto: Wide : Approx. 30cm - 8.0m / 1ft. - 26.2ft. Telephoto : Approx. 2.5m - 4.0m / 8.2ft. - 13.1ft.
Max Flash Sync: 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 / SDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) RAW (.RAF), RAW+JPEG
Movie File Format:   .MOV (H.264/MPEG-4) with stereo sound
Included Memory: No memory included 25.0 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 Yes
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 wired
Connections (extended): AC adapter available MIni (Type C) HDMI port, external mic jack
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 11.0
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):   600 shots
Battery Life, Still (CIPA Rating OVF/EVF): 420 shots (NiMH AA)  
Battery Life, Video:    
Battery Form Factor: 4 x AA Proprietary
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: Yes
Internal Charging Supported: No
Software
Included Software: CD-ROM Fujifilm 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 EXR CMOS II Sensor with Phase Detection, Intelligent Hybrid Autofocus, Focus Peaking, Manual 42x Optical Zoom Lens (24-1000mm eq.), Optical Image Stabilization, 3.0" Variable Angle LCD, Full HD Movie 1080p/60fps with continuous phase detection AF and stereo sound, Film Simulation Modes, Multiple Exposures, Advanced Filters.