• APS-C 368.2mm2
  • 14.6 megapixels
  • ISO 100 - 3200
  • APS-C 366.6mm2
  • 16.1 megapixels
  • ISO 100 - 25,600
  • Detailed specifications
  • Pentax K20D
  • Sony Alpha NEX-6
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax K10D
K10D vs K20D
 
Successor: Pentax K-7
K20D vs K-7
Sony A6000
NEX-6 vs A6000
General
Model Number: K20D NEX-6
Alternate Model Number(s):    
Camera Format: Pro SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $799.95 $999.99
Street Price:   $549.00
Date Available: 2008-04-30 2012-11-15
Tripod Mount: Yes Yes
Weight: 28.3 oz (802 g)
includes batteries
16.5 oz (469 g)
includes batteries, kit lens
Size: 5.6 x 4.0 x 2.8 in.
(142 x 102 x 70 mm)
4.7 x 2.6 x 1.7 in.
(120 x 67 x 43 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Sony Exmor APS HD
Effective Megapixels: 14.6 16.1
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 4.78 microns
Focal Length Multiplier: 1.5x 1.5x
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: 65 78
DxO Color Depth Score (bits): 22.9 23.7
DxO Dynamic Range Score (evs): 11.1 13.1
DxO Maximum Effective ISO Score (iso): 639 1,018
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)
4912 x 3264 (16.0 MP, 3:2),
4912 x 2760 (13.6 MP, 16:9),
3568 x 2368 (8.4 MP, Other),
3568 x 2000 (7.1 MP, 16:9),
2448 x 1624 (4.0 MP, Other),
2448 x 1376 (3.4 MP, 16:9),
12416 x 1856 (23.0 MP, Other),
8192 x 1856 (15.2 MP, Other),
2160 x 5536 (12.0 MP, Other),
2160 x 3872 (8.4 MP, Other)
Image File Format: JPEG (EXIF 2.21), RAW (.PEF, .DNG) JPEG, RAW (ARW 2.3), RAW+JPEG
Continuous-mode frames/second: 2.8 9.7
Video Capture
Can take movies: No Yes
Movie Resolution: 1920x1080 (60p/​28Mbps/​PS or 60i/​24Mbps/​FX or 60i/​17Mbps/​FH or 24p/​24Mbps/​FX or 24p/​17Mbps/​FH)
1440x1080 (30p/​12Mbps)
640x480 (30p/​3Mbps)
Movie File Format:   AVCHD 2.0 / MP4; Audio: Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
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) Sony E
Lens: n/a Sony SELP1650 PZ 16-50mm f/3.5-5.6 OSS; 9 elements in 8 groups, 4 aspheric surfaces
Focal Length (35mm equivalent):   24 - 75mm
Focal Length (actual):   16 - 50mm
Zoom Ratio:   3.13x
Aperture Range:   f/3.5 - f/22 (W) / f/5.6 - f/36 (T); 7-blade circular aperture
Integrated ND Filter: No No
Normal Focus Range:   25 cm to Infinity
9.8 in to Infinity
Macro Focus Range:    
Filter Thread: n/a 40.5mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 2x Clear Image zoom; up to 4x Precision zoom; 1.4x / 2x Smart zoom at reduced resolution
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 11-point TTL phase-matching (SAFOX VIII) Hybrid AF (99-point phase detect; 25-point contrast detect): Multi-point, Center, Flexible Spot; with Face Detection and Predictive Tracking
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD EVF / LCD
Viewfinder Type: SLR type; eye-level pentaprism, coverage: 95%, magnification: 0.95x, diopter: -2.5 to 1.5 EVF: 1.3cm (0.5-inch) 2,359K-dot XGA OLED, 1.09x magnification (0.71x 35mm eq.), 100% coverage, -4 to +1 diopter, 21mm eyepoint from eyepiece frame at -1 diopter (CIPA standard)
Focus Peaking: No Yes
EVF Resolution: n/a 2,359,000 dots
Viewfinder Magnification (35mm equivalent): 0.63x 0.73x
Viewfinder Magnification (nominal/claimed): 0.95x 1.09x
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 No
Selfie Screen: No No
Max Playback Zoom: 32.0x 14.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 3200 25600
Minimum ISO (native): 100 100
ISO Settings: Auto, 100, 200, 400, 800, 1600, 3200, 6400 (expanded) Auto (100-3200), 100-25600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (W, D, N), Flash, Color Temperature Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent, Flash, Color Temp. (2500-9900K), Color Filter, Custom
Shutter Speed Range: 1/4000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: 16-segment, Center-weighted, Spot 1200-zone Multi Segment, Center-weighted, Spot
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 Sweep Panorama, Scene Selection (Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night Scene, Hand-held Twilight, Anti Motion Blur), Auto Portrait Framing
Self Timer: 2 or 12 seconds 2, 10, 10 with 3/5 shots seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: On, Redeye, Slow Sync, Slow Sync + Redeye, Trailing Curtain Sync, Wireless Flash Off, Autoflash, Fill-flash, Slow sync., Rear-Sync.; Red-eye Reduction On/Off
Flash Guide Number (ISO 100): 13.0 m / 42.7 ft. 6.0 m / 19.7 ft.
Flash Range Description: Depends on lens GN=6(m) at ISO 100; Range is lens aperture dependent
Max Flash Sync: 1/180 1/160
Flash Exposure Compensation: -2 to +1 EV in 0.3EV steps +/- 2.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe, PC-Sync Socket Multi-Interface (Mi) Shoe
Built-In Wireless Flash Control: Full TTL exposure  
Image Storage
Usable Memory Types: SD / SDHC MS PRO Duo / SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (.PEF, .DNG) RAW (ARW 2.3), RAW+JPEG
Movie File Format:   AVCHD 2.0 / MP4; Audio: Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
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 No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed,WiFi
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Wired or IR Optional RMT-DSLR2 IR Wireless
Connections (extended): DC input, wired remote Mini HDMI (Type C), Multi-Interface (Mi) Shoe
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39 0.61
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.36 0.66
Buffer size for RAW shooting in single shot mode (frames): 11 13
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.64
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 2.8 9.7
Buffer size for JPEG shooting in burst mode (frames, max resolution): 38 12
RAW shooting speed in burst mode (fps):   9.8
Buffer size for RAW shooting in burst mode (frames):   10
RAW+JPEG shooting speed in burst mode (fps):   9.8
Buffer Size for RAW+JPEG shooting in burst mode (frames):   9
Shutter lag (full AF, wide/mid): 0.17 seconds 0.26 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 0.126 seconds
Shutter lag (full AF, with flash): 0.24 seconds 0.38 seconds
Shutter Lag (prefocused): 0.089 seconds 0.023 seconds
Shutter Lag (notes): Live View: Full AF = n/a Prefocused = 0.659s Prefocused with flash = 2.395s Full Autofocus, Multi-area AF mode = 0.261s
Startup Time: 0.4 seconds 2.0 seconds
Play -> Record Time: 0.5 seconds 1.1 seconds
Flash cycle time, full power: 3.1 seconds 2.5 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   360 shots
Battery Life, Still (CIPA Rating OVF/EVF): 530 shots 270 shots
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI50 Proprietary InfoLithium NP-FW50
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI50 Lithium-ion rechargeable 1 x Proprietary NP-FW50 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 Image Data Converter Ver. 4, PlayMemories Home
OS Compatibility: Windows XP/Vista, MacOS 10.2 or later Windows XP/Vista/7; Mac OS X 10.5 or later. (PlayMemories Home is Windows only.)
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. New "Fast Hybrid AF", built-in OLED EVF, tilting 921K-dot LCD, built-in Wi-Fi, built-in flash, Multi-Interface Shoe, Full HD movies at up to 60p, 10 fps burst mode.