• APS-C 368.2mm2
  • 14.6 megapixels
  • ISO 100 - 3200
  • APS-C 366.6mm2
  • 24.2 megapixels
  • 28.00mm (35mm eq.)
  • Detailed specifications
  • Pentax K20D
  • Ricoh GR III
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax K10D
K10D vs K20D
Ricoh GR II
GR II vs GR III
Successor: Pentax K-7
K20D vs K-7
 
General
Model Number: K20D GR III
Alternate Model Number(s):    
Camera Format: Pro SLR Compact
Currently Manufactured: No Yes
Retail Price: $799.95 $899.95
Street Price:   $1,221.30
Date Available: 2008-04-30 2019-03-22
Tripod Mount: Yes Yes
Weight: 28.3 oz (802 g)
includes batteries
9.1 oz (257 g)
includes batteries
Size: 5.6 x 4.0 x 2.8 in.
(142 x 102 x 70 mm)
4.3 x 2.4 x 1.3 in.
(109 x 62 x 33 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:    
Effective Megapixels: 14.6 24.2
Sensor Format: APS-C APS-C
Sensor size: 368.16mm2 (23.60mm x 15.60mm) 366.6mm2 (23.50mm x 15.60mm)
Approximate Pixel Pitch: 5.05 microns 3.92 microns
Focal Length Multiplier: 1.5x 1.5x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Optional
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes Yes
On-Sensor Phase Detect: No Yes
DxO Sensor Score: 65  
DxO Color Depth Score (bits): 22.9  
DxO Dynamic Range Score (evs): 11.1  
DxO Maximum Effective ISO Score (iso): 639  
Image Capture
Image Resolution: 4672 x 3104 (14.5 MP, Other),
3872 x 2592 (10.0 MP, Other),
3008 x 2000 (6.0 MP, 3:2),
1824 x 1216 (2.2 MP, 3:2)
6000 x 4000 (24.0 MP, 3:2),
4800 x 3200 (15.4 MP, 3:2),
3360 x 2240 (7.5 MP, 3:2),
1920 x 1080 (2.1 MP, 16:9),
4000 x 4000 (16.0 MP, 1:1),
3200 x 3200 (10.2 MP, 1:1),
2240 x 2240 (5.0 MP, 1:1),
1280 x 1280 (1.6 MP, 1:1)
Image File Format: JPEG (EXIF 2.21), RAW (.PEF, .DNG) JPEG (EXIF 2.3), 14-bit RAW (DNG), RAW+JPEG
Continuous-mode frames/second: 2.8 4.3
Video Capture
Can take movies: No Yes
Movie Resolution: 1920x1080 (60p/​30p/​24p)
Movie File Format:   MOV (Image: MPEG-4 AVC/H.264, Sound: Linear PCM)
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: Display Port
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2) n/a
Lens: n/a GR lens, 6 elements in 4 groups with 2 aspheric elements
Focal Length (35mm equivalent):   28mm
Focal Length (actual):   18.3mm
Zoom Ratio:   1.00x
Aperture Range:   f/2.8 - f/16, with 9-bladed diaphragm; 2EV ND filter
Integrated ND Filter: No Yes
Normal Focus Range:   10 cm to Infinity
3.9 in to Infinity
Macro Focus Range:   6 - 12 cm
2.4 - 4.7 in
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No Yes
Digital Zoom Values: n/a 35mm eq. crop mode
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 11-point TTL phase-matching (SAFOX VIII) Hybrid AF Phase/Contrast Detection: Auto-area AF, Zone AF, Select AF, Pinpoint AF, Tracking AF, Continuous AF, MF, Snap, Infinity
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD No / LCD
Viewfinder Type: SLR type; eye-level pentaprism, coverage: 95%, magnification: 0.95x, diopter: -2.5 to 1.5 Optional hotshoe mounted optical viewfinders
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.63x  
Viewfinder Magnification (nominal/claimed): 0.95x  
Display
Eye-level Viewfinder: Yes No
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 Yes
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 32.0x 16.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 3200 102400
Minimum ISO (native): 100 100
ISO Settings: Auto, 100, 200, 400, 800, 1600, 3200, 6400 (expanded) Auto, ISO 100 - 102,400
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (W, D, N), Flash, Color Temperature Auto White Balance, Multi Auto White Balance, Daylight, Shade, Cloudy, Fl. - Daylight Color, Fl. - Daylight White, Fl. - Cool White, Fl. - Warm White, Tungsten, CTE, Manual White Balance, Color Temperature
Shutter Speed Range: 1/4000 - 30 sec 1/4000 - 1200 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: 16-segment, Center-weighted, Spot Multi-segment, Center-weighted, Spot, Highlight-weighted
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Sensitivity Priority, Shutter and Aperture Priority Standard, Vivid, Monotone, Soft Monotone, Hard Monotone, Hi-Contrast B&W, Positive Film, Bleach Bypass, Retro, HDR Tone, Custom1, Custom 2; Highlight Correction, Shadow Correction
Self Timer: 2 or 12 seconds 2, 12 seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: On, Redeye, Slow Sync, Slow Sync + Redeye, Trailing Curtain Sync, Wireless Flash On, Flash On+Red-eye, Slow-speed Sync, Slow Sync+Red-eye
Flash Guide Number (ISO 100): 13.0 m / 42.7 ft. n/a
Flash Range Description: Depends on lens n/a
Max Flash Sync: 1/180  
Flash Exposure Compensation: -2 to +1 EV in 0.3EV steps -2 to +1 EV
External Flash Connection: Hot Shoe, PC-Sync Socket Hot Shoe (Compatible with P-TTL Auto Flash)
Built-In Wireless Flash Control: Full TTL exposure No
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: RAW (.PEF, .DNG) 14-bit RAW (DNG), RAW+JPEG
Movie File Format:   MOV (Image: MPEG-4 AVC/H.264, Sound: Linear PCM)
Included Memory: No memory included 2,000.0 MB
Included Memory Type:   Internal
Connectivity
Built-In Wi-Fi: No Yes
NFC: No No
Bluetooth: No Yes
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 3.0 Super Speed,Bluetooth,WiFi
PictBridge Compliant: Yes No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Wired or IR Via Wi-Fi/Bluetooth
Connections (extended): DC input, wired remote USB-C (supports DisplayPort)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39 0.66
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.36  
Buffer size for RAW shooting in single shot mode (frames): 11  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.65
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 2.8 4.3
Buffer size for JPEG shooting in burst mode (frames, max resolution): 38 Unlimited
RAW shooting speed in burst mode (fps):   4.1
Buffer size for RAW shooting in burst mode (frames):   9
RAW+JPEG shooting speed in burst mode (fps):   4.3
Buffer Size for RAW+JPEG shooting in burst mode (frames):   9
Shutter lag (full AF, wide/mid): 0.17 seconds 0.18 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.090 seconds 0.028 seconds
Shutter lag (full AF, with flash): 0.24 seconds  
Shutter Lag (prefocused): 0.089 seconds 0.026 seconds
Shutter Lag (notes): Live View: Full AF = n/a Prefocused = 0.659s Prefocused with flash = 2.395s  
Startup Time: 0.4 seconds 0.7 seconds
Play -> Record Time: 0.5 seconds 0.5 seconds
Flash cycle time, full power: 3.1 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   200 shots
Battery Life, Still (CIPA Rating OVF/EVF): 530 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI50 Proprietary DB-110
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI50 Lithium-ion rechargeable 1 x Proprietary DB-110 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes No
Internal Charging Supported: No Yes
Software
Included Software: CD-ROM S-SW74/75  
OS Compatibility: Windows XP/Vista, MacOS 10.2 or later  
Miscellaneous
Notes & Features: PENTAX-developed Shake Reduction (SR) system; Weather and dust resistant body; Live View mode that allows users to see the full image area to confirm composition, focus status and lighting on the large 2.7 inch LCD monitor; Expanded Dynamic Range function; Improved Dust Reduction system that features the new Dust Alert function to pinpoint the exact location of dust particles for the photographer to remove.