• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • 35mm 861.6mm2
  • 26.2 megapixels
  • ISO 100 - 40,000
  • Detailed specifications
  • Pentax K-x
  • Canon EOS RP
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 EOS RP
Alternate Model Number(s):    
Camera Format: SLR Compact System Camera
Currently Manufactured: No Yes
Retail Price: $649.95 $2399.00
Street Price: $701.76 $949.00
Date Available: 2009-10-15 2019-03-15
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens
17.1 oz (485 g)
includes batteries
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm)
5.2 x 3.3 x 2.8 in.
(133 x 85 x 70 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Canon
Effective Megapixels: 12.4 26.2
Sensor Format: APS-C 35mm
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 861.6mm2 (35.90mm x 24.00mm)
Approximate Pixel Pitch: 5.53 microns 5.75 microns
Focal Length Multiplier: 1.5x 1.0x
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 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)
6240 x 4160 (26.0 MP, 3:2),
4160 x 2768 (11.5 MP, 3:2),
3120 x 2080 (6.5 MP, 3:2),
2400 x 1600 (3.8 MP, 3:2),
6240 x 3504 (21.9 MP, 16:9),
4160 x 2336 (9.7 MP, 16:9),
3120 x 1752 (5.5 MP, 16:9),
2400 x 1344 (3.2 MP, Other),
5536 x 4160 (23.0 MP, 4:3),
3680 x 2768 (10.2 MP, 4:3),
2768 x 2080 (5.8 MP, 4:3),
2112 x 1600 (3.4 MP, Other),
4160 x 4160 (17.3 MP, 1:1),
2768 x 2768 (7.7 MP, 1:1),
2080 x 2080 (4.3 MP, 1:1),
1600 x 1600 (2.6 MP, 1:1)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) JPEG (EXIF 2.3), 14-bit .CR3 RAW, C-RAW, RAW+JPEG
Continuous-mode frames/second: 4.3 5.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24)
3840x2160 (25p/​24p)
1920x1080 (60p/​50p/​30p/​25p)
1280x720 (60p/​50p/​30p/​25p)
Movie File Format:   MP4 (Video: MPEG-4 AVC / H.264, Audio: Linear PCM or AAC)
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) Canon RF
Lens: smc Pentax DA L 18-55mm f/3.5-5.6 AL Canon RF 24-105mm f/4L IS USM; 18 elements in 14 groups, with UD and aspherical elements, Air Sphere, SWC and Fluorine coatings
Focal Length (35mm equivalent): 27 - 84mm 24 - 105mm
Focal Length (actual): 18 - 55mm 24 - 105mm
Zoom Ratio: 3.00x 4.38x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/4 - f/22; 9-bladed aperture
Integrated ND Filter: No
Normal Focus Range:   45 cm to Infinity
17.7 in to Infinity
Macro Focus Range:    
Filter Thread: 52.0mm 77.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
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 Dual-Pixel CMOS AF: 4779 selectable AF points; Face+Tracking AF, Spot AF, 1-point AF, Expand AF Area, Zone AF; Touch and Drag AF; Eye-AF
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: 2.36M dot OLED, 100% coverage, 0.70x magnification, 22mm eyepoint, -4 to +1 diopter, eye sensor
Focus Peaking: No No
EVF Resolution: n/a 2,360,000 dots
Viewfinder Magnification (35mm equivalent): 0.57x 0.70x
Viewfinder Magnification (nominal/claimed): 0.85x 0.70x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 1,040,000 dots (346,600 px)
Touchscreen: No Yes
Articulating Screen: No Yes
Tilt Swivel Screen: No Yes
Selfie Screen: No Yes
Max Playback Zoom: 16.0x 10.0x
Top Deck Display: No No
Exposure
Maximum ISO (native): 6400 40000
Minimum ISO (native): 200 100
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 Auto, 100 - 40000 in 1/3 or 1EV steps, Expandable to L (50), H1 (51200) and H2 (102400)
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom Auto (Ambience priority/White priority), Daylight, Shade, Cloudy, Tungsten, White Fluorescent, Flash, Custom, Color Temperature
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 Evaluative metering (AF point-linked), Partial (approx. 5.5% of the area at the center of the screen), Center-weighted, Spot (approx. 2.7% of the area at the center of the screen)
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 Intelligent Auto, Flexible Priority, Scene (Portrait, Group Photo, Landscape, Sports, Kids, Panning, Close-up, Food, Candlelight, Night Portrait, Handheld Night Scene, HDR Backlight Control), Focus Stacking, 3 Custom User Settings
Self Timer: 2 or 12 seconds 10s, 2s, 2-10 shots after 10 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 E-TTL II Auto Flash, Metered Manual, FE Lock
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 +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe Hot Shoe
Built-In Wireless Flash Control: Full TTL exposure No
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-II
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) 14-bit .CR3 RAW, C-RAW, RAW+JPEG
Movie File Format:   MP4 (Video: MPEG-4 AVC / H.264, Audio: Linear PCM or AAC)
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No No
Bluetooth: No Yes
Built-In GPS: No No
Microphone Jack: No Yes
Headphone Jack: No Yes
External Connections: USB 2.0 High Speed USB 2.0 High Speed,Bluetooth,WiFi
PictBridge Compliant: No Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional IR Optional wired, Bluetooth or Wi-Fi
Connections (extended): AC adapter available Mini (Type-C) HDMI, Type-C USB 2.0, Remote Jack, 3.5mm Stereo Mic and Headphone Jacks
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):   0.34
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 4.3 5.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 Unlimited
RAW shooting speed in burst mode (fps):   5.0
Buffer size for RAW shooting in burst mode (frames):   Unlimited
RAW+JPEG shooting speed in burst mode (fps):   5.0
Buffer Size for RAW+JPEG shooting in burst mode (frames):   130
Shutter lag (full AF, wide/mid): 0.10 seconds 0.22 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 0.174 seconds
Shutter lag (full AF, with flash): 0.23 seconds  
Shutter Lag (prefocused): 0.082 seconds 0.055 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 1.1 seconds
Play -> Record Time: 0.2 seconds 0.6 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) 210 shots
Battery Life, Video:    
Battery Form Factor: 4 x AA Proprietary
Usable Battery Types: Lithium, Alkaline disposables; NiMH rechargeables LP-E17 Lithium-ion rechargeable
Batteries Included: 4 x AA Alkaline disposables 1 x Proprietary LP-E17 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.