• APS-C 369.7mm2
  • 12.3 megapixels
  •  
  • APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • Detailed specifications
  • Ricoh GXR
  • Pentax K-3
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:   Pentax K-3 II
K-3 vs K-3 II
General
Model Number: GXR K-3
Alternate Model Number(s):    
Camera Format: Other Pro SLR
Currently Manufactured: No No
Retail Price: $1380.00 $1149.95
Street Price:   $699.00
Date Available: 2009-12-31 2013-11-01
Tripod Mount: Yes Yes
Weight: 14.9 oz (423 g) 43.7 oz (1,240 g)
includes batteries, kit lens
Size: 4.5 x 2.8 x 3.0 in.
(114 x 70 x 77 mm)
5.2 x 3.9 x 3.1 in.
(132 x 100 x 77 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:    
Effective Megapixels: 12.3 24.4
Sensor Format: APS-C APS-C
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 366.6mm2 (23.50mm x 15.60mm)
Approximate Pixel Pitch: 5.53 microns 3.91 microns
Focal Length Multiplier: n/a 1.5x
Aspect Ratio: 4:3 3:2
Color Filter Type:   RGBG
Anti Aliasing Filter:   Optional
Self-Cleaning: No Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: No No
DxO Sensor Score:   80
DxO Color Depth Score (bits):   23.7
DxO Dynamic Range Score (evs):   13.4
DxO Maximum Effective ISO Score (iso):   1,216
Image Capture
Image Resolution: 4288 x 2848 (12.2 MP, Other),
3776 x 2832 (10.7 MP, 4:3),
4288 x 2416 (10.4 MP, Other),
2848 x 2848 (8.1 MP, 1:1),
3456 x 2304 (8.0 MP, 3:2),
3072 x 2304 (7.1 MP, 4:3),
3456 x 1944 (6.7 MP, 16:9),
2304 x 2304 (5.3 MP, 1:1),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1280 x 960 (1.2 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
6016 x 4000 (24.1 MP, 3:2),
4608 x 3072 (14.2 MP, 3:2),
3072 x 2048 (6.3 MP, 3:2),
1920 x 1280 (2.5 MP, 3:2)
Image File Format: JPEG (EXIF v2.21), .DNG Raw JPEG (EXIF 2.30), 14-bit RAW (.PEF, .DNG), RAW+JPEG
Continuous-mode frames/second: 3.0 7.1
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x480 (24)
320x240 (24)
1920x1080 (60i/​50i/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p)
Movie File Format: AVI (OpenDML Motion JPEG) MPEG-4 AVC/H.264 (MOV), Motion JPEG (AVI) for interval movie record
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Ricoh GXR Pentax K (KA/KAF/KAF2/3)
Lens: n/a smc Pentax 18-135mm f/3.5-5.6 ED AL [IF] DC DA WR
Focal Length (35mm equivalent):   27 - 203mm
Focal Length (actual): 33 - 50mm 18 - 135mm
Zoom Ratio:   7.50x
Aperture Range: f/2.5 - f/22 f/3.5 - f/22 (wide) / f/5.6 - f/40 (tele)
Integrated ND Filter: No No
Normal Focus Range: 30 cm to Infinity
11.8 in to Infinity
40 cm to Infinity
15.7 in to Infinity
Macro Focus Range: 7 cm to Infinity
2.8 in to Infinity
 
Filter Thread: n/a 62.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: Yes
Digital Zoom Values: 4x (3.6x for movies)  
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast detection multi / spot SAFOX 11 TTL phase-matching - 27 point (25 cross type focus points in the center)
Auto Focus Assist Light? No Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: LCD Optical / LCD
Viewfinder Type:   SLR type; eye-level pentaprism, ~100% coverage, 0.95x mag., TBDmm eyepoint, -2.5 to +1.5 diopter
Focus Peaking: No Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):   0.63x
Viewfinder Magnification (nominal/claimed):   0.95x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.2
Rear Display Resolution: 920,000 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 16.0x
Top Deck Display: Yes
Exposure
Maximum ISO (native):   51200
Minimum ISO (native):   100
ISO Settings: Auto, 200, 400, 800, 1600, 3200 Auto, 100-51200 (1, 1/2 or 1/3 EV steps)
Auto ISO Mode: No Yes
White Balance Settings: Auto, Multi-P AUTO, Outdoors, Cloudy, Incandescent Lamp, Fluorescent Lamp, Manual Setting Auto, Multi Auto WB, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N:Daylight White, W:Cool White, L:Warm White), Tungsten Light, Flash, CTE, Manual (up to 3 settings), Color Temperature (up to 3 settings)
Shutter Speed Range: 1/3200 - 180 sec 1/8000 - 30 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 4.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL by CCD, 256-segment multi, center-weighted or spot TTL open-aperture: Multi-segment with 86K-pixel RGB sensor, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Movie, portrait, sports, landscape, nightscape, skew correction Sensitivity Priority, Shutter and Aperture Priority; Digital filters (capture): Extract Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; HDR: Auto, HDR1, HDR2, HDR3.
Self Timer: 2 or 10 seconds 2 or 12 seconds
Time Lapse (intervalometer): Yes Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, red-eye, on, slow sync, manual (FULL, 1/1.4, 1/2, 1/2.8, 1/4, 1/5.6, 1/8, 1/11, 1/16, 1/22, 1/32, 1/64), off P-TTL, Red-eye reduction, Slow-speed sync, Rear Curtain Sync. High-Speed Sync and Wireless Sync also available with PENTAX dedicated external flash.
Flash Guide Number (ISO 100): n/a 13.0 m / 42.7 ft.
Flash Range Description: 20cm - 3m (ISO AUTO) Depends on lens
Max Flash Sync:   1/180
Flash Exposure Compensation: +/- 2.0 EV in 0.3EV steps -2 to +1 EV in 0.5EV steps
External Flash Connection: Hot shoe Hot Shoe, PC Sync socket
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No Yes
RAW Capture Support: Yes Yes
Uncompressed Format: .DNG Raw 14-bit RAW (.PEF, .DNG), RAW+JPEG
Movie File Format: AVI (OpenDML Motion JPEG) MPEG-4 AVC/H.264 (MOV), Motion JPEG (AVI) for interval movie record
Included Memory: 86.0 MB No memory included
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 Yes
External Connections: USB 2.0 High Speed USB 3.0 Super Speed
PictBridge Compliant: No No
DPOF Compliant: No Yes
Remote Control: No Yes
Remote Control Type:   Optional Wired or IR
Connections (extended):   Micro (Type D) HMDI, USB 3.0 Micro B, DC input, wired remote jack, 3.5mm external stereo mic jack, 3.5mm stereo headphone jack
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.79
Cycle time for RAW shooting in single shot mode (seconds per frame):   0.64
Buffer size for RAW shooting in single shot mode (frames):   Unlimited
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.69
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 3.0 7.1
Buffer size for JPEG shooting in burst mode (frames, max resolution): 15 75
RAW shooting speed in burst mode (fps):   7.1
Buffer size for RAW shooting in burst mode (frames):   24
RAW+JPEG shooting speed in burst mode (fps):   7.1
Buffer Size for RAW+JPEG shooting in burst mode (frames):   25
Shutter lag (full AF, wide/mid):   0.14 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):   1.01 seconds
Shutter lag (prefocused, live view - DSLR):   0.226 seconds
Shutter Lag (manual focus):   0.097 seconds
Shutter lag (full AF, with flash):   0.33 seconds
Shutter Lag (prefocused):   0.096 seconds
Shutter Lag (notes):   Full AF lag, Wide-area mode, OVF = 0.157s Live View: Center mode AF lag = 1.014s Wide-area mode AF lag = 1.005s Prefocused = 0.226s
Startup Time:   0.9 seconds
Play -> Record Time:   0.6 seconds
Flash cycle time, full power:   2.3 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 320 shots  
Battery Life, Still (CIPA Rating OVF/EVF):   560 shots
Battery Life, Video:    
Battery Form Factor: Proprietary DB-90 Proprietary D-LI90
Usable Battery Types: 3.6V Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included:   1 x Proprietary D-LI90 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: DL-10, Irodio Photo and Video Studio, Adobe Reader, VM-1 for Mac Software CD-ROM S-SW140
OS Compatibility: Windows, Mac OS  
Miscellaneous
Notes & Features: Sensor and lens are interchangeable as one unit. Specs above are with the 12.3 megapixel APS-C CMOS sensor and 33mm (50mm equivalent) fixed focal length lens. Also available is a 1/1.7" ten megapixel CCD sensor with 5.1-15.3mm (24-72mm equivalent) lens. With this combination, maximum aperture varies from f/2.5 to f/4.4 across the zoom range, macro shooting distance drops to 1cm, sensor shift image stabilization becomes available, fastest shutter speed falls to 1/2000 sec., minimum ISO sensitivity is expanded to 100, flash range is 20cm-4.5m at wide angle and 15cm to 2.7m at telephoto, zoom macro scene mode is added, noise reduction is automatically applied above ISO 800, burst rate drops to 1.6 frames per second, HD movie mode is dropped and framerate increases to 30fps, battery life increases to 410 shots, body depth drops to 44.4mm, and body-only weight falls to 325 grams. Price estimate is based on US street pricing at launch - $550 for the camera body plus $830 for the APS-C fixed lens block. The 1/1.7" zoom lens block is another $440. Image stabilization system also acts as a selectable AA filter, 8.3 fps full-res burst mode, new 27-point AF system, new 86,000 pixel RGB metering system, Full HD video up to 60i with H.264 encoding, dual SD card slots, freeze-proof, dust-proof, weather-resistant magnesium alloy construction, USB 3.0 port.