• APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • Medium format 1,436.6mm2
  • 51.4 megapixels
  • ISO 100 - 204,800
  • Detailed specifications
  • Pentax K-3
  • Pentax 645Z
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Prices: Compare Prices Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Pentax 645D
645D vs 645Z
Successor: Pentax K-3 II
K-3 vs K-3 II 		 
General
Model Number: K-3 645Z
Alternate Model Number(s):    
Camera Format: Pro SLR Pro SLR
Currently Manufactured: No Yes
Retail Price: $1149.95 $8499.95
Street Price: $699.00 $4,845.43
Date Available: 2013-11-01 2014-06-15
Tripod Mount: Yes Yes
Weight: 43.7 oz (1,240 g)
includes batteries, kit lens 		54.9 oz (1,555 g)
includes batteries
Size: 5.2 x 3.9 x 3.1 in.
(132 x 100 x 77 mm) 		6.1 x 4.6 x 4.8 in.
(156 x 117 x 123 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Sony
Effective Megapixels: 24.4 51.4
Sensor Format: APS-C Medium format
Sensor size: 366.6mm2 (23.50mm x 15.60mm) 1436.64mm2 (43.80mm x 32.80mm)
Approximate Pixel Pitch: 3.91 microns 5.31 microns
Focal Length Multiplier: 1.5x 0.8x
Aspect Ratio: 3:2 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Optional None
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 80 101
DxO Color Depth Score (bits): 23.7 26.0
DxO Dynamic Range Score (evs): 13.4 14.7
DxO Maximum Effective ISO Score (iso): 1,216 4,505
Image Capture
Image Resolution: 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) 		8256 x 6192 (51.1 MP, 4:3),
6192 x 5184 (32.1 MP, Other),
5376 x 4032 (21.7 MP, 4:3),
1920 x 1440 (2.8 MP, 4:3)
Image File Format: JPEG (EXIF 2.30), 14-bit RAW (.PEF, .DNG), RAW+JPEG JPEG, 14-bit PEF / DNG RAW, TIFF
Continuous-mode frames/second: 7.1 3.1
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (60i/​50i/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p) 		1920x1080 (60i/​50i/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p)
Movie File Format: MPEG-4 AVC/H.264 (MOV), Motion JPEG (AVI) for interval movie record MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record
Composite Video Out: No No
NTSC/PAL Switchable Video: n/a n/a
Video Usable as Viewfinder: n/a n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2/3) Pentax 645 bayonet
Lens: smc Pentax 18-135mm f/3.5-5.6 ED AL [IF] DC DA WR n/a
Focal Length (35mm equivalent): 27 - 203mm  
Focal Length (actual): 18 - 135mm  
Zoom Ratio: 7.50x  
Aperture Range: f/3.5 - f/22 (wide) / f/5.6 - f/40 (tele)  
Integrated ND Filter: No No
Normal Focus Range: 40 cm to Infinity
15.7 in to Infinity 		 
Macro Focus Range:    
Filter Thread: 62.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom:
Digital Zoom Values:    
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: SAFOX 11 TTL phase-matching - 27 point (25 cross type focus points in the center) 27-point SAFOX 11+ Phase Difference Detection (25 cross type focus points in the center): Spot, Select, Expanded Area AF (S, M, L), Zone Select, Auto (27 AF Points)
Auto Focus Assist Light? Yes No
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD Optical / LCD
Viewfinder Type: SLR type; eye-level pentaprism, ~100% coverage, 0.95x mag., TBDmm eyepoint, -2.5 to +1.5 diopter Trapezoid prism finder w/ interchangeable Natural-Bright-Matte focusing screen; Coverage: ~98%; Magnification: ~0.62x (55mmF2.8 at infinity), ~0.85x (75mmF2.8 at infinity); Diopter: -3.5 m to + 2.0 m-1; Eye Relief: ~21 mm (from view window), ~24.1 mm (from center of lens)
Focus Peaking: Yes Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.63x 0.78x
Viewfinder Magnification (nominal/claimed): 0.95x 0.62x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.2 3.2
Rear Display Resolution: 1,036,800 dots (345,600 px) 1,036,800 dots (345,600 px)
Touchscreen: No No
Articulating Screen: No Yes
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x 16.0x
Top Deck Display: Yes Yes
Exposure
Maximum ISO (native): 51200 204800
Minimum ISO (native): 100 100
ISO Settings: Auto, 100-51200 (1, 1/2 or 1/3 EV steps) Auto, 100-204800 in 1, 1/2 or 1/3EV steps
Auto ISO Mode: Yes Yes
White Balance Settings: 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) Auto, Multi Auto, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N: Daylight White, W: Cool White, L: Warm White), Tungsten, Flash, CTE; Manual mode(s): Manual (up to 3 settings can be saved), Color Temperature (up to 3 settings can be saved), Copying the white balance settings of a captured image possible
Shutter Speed Range: 1/8000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 5.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: Multi-segment with 86K-pixel RGB sensor, Center-weighted, Spot 86K-pixel RBG sensor: Multi-segment metering, Center-weighted metering, Spot metering
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; Digital filters (capture): Extract Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; HDR: Auto, HDR1, HDR2, HDR3. Sensitivity Priority, Shutter & Aperture Priority; HDR Capture: Auto, Type1, Type2, Type3, Exposure Bracket Value adjustable, Auto Align (automatic composition correction function) available; Custom Image: Bright, Natural, Portrait, Landscape, Vibrant, Radiant, Muted, Bleach Bypass, Reversal Film, Monochrome, Cross Processing (Random, Preset 1-3, Favorite 1-3)
Self Timer: 2 or 12 seconds 2 or 12 seconds
Time Lapse (intervalometer): Yes Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: P-TTL, Red-eye reduction, Slow-speed sync, Rear Curtain Sync. High-Speed Sync and Wireless Sync also available with PENTAX dedicated external flash. P-TTL; high-speed sync, wireless sync supported with compatible flash unit
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 1/125
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps -2 to +1 EV
External Flash Connection: Hot Shoe, PC Sync socket Hot shoe, X-sync socket
Built-In Wireless Flash Control: Full TTL exposure  
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support: UHS-I UHS-I
Other Memory:    
Dual Card Slots: Yes Yes
RAW Capture Support: Yes Yes
Uncompressed Format: 14-bit RAW (.PEF, .DNG), RAW+JPEG 14-bit PEF / DNG RAW, TIFF
Movie File Format: MPEG-4 AVC/H.264 (MOV), Motion JPEG (AVI) for interval movie record MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: Yes Yes
Headphone Jack: Yes No
External Connections: USB 3.0 Super Speed USB 3.0 Super Speed
PictBridge Compliant: No No
DPOF Compliant: Yes No
Remote Control: Yes Yes
Remote Control Type: Optional Wired or IR Optional wired or wireless
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 Micro (Type-D) HDMI, DC input, Stereo microphone jack, wired remote socket
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.79 0.35
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.64 0.33
Buffer size for RAW shooting in single shot mode (frames): Unlimited 10
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): 0.69 0.33
Camera penalizes early shutter press? No Yes
JPEG shooting speed in burst mode (fps, max resolution): 7.1 3.1
Buffer size for JPEG shooting in burst mode (frames, max resolution): 75 12
RAW shooting speed in burst mode (fps): 7.1 3.1
Buffer size for RAW shooting in burst mode (frames): 24 10
RAW+JPEG shooting speed in burst mode (fps): 7.1 3.1
Buffer Size for RAW+JPEG shooting in burst mode (frames): 25 10
Shutter lag (full AF, wide/mid): 0.14 seconds 0.16 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR): 1.01 seconds 1.17 seconds
Shutter lag (prefocused, live view - DSLR): 0.226 seconds 0.385 seconds
Shutter Lag (manual focus): 0.097 seconds 0.117 seconds
Shutter lag (full AF, with flash): 0.33 seconds  
Shutter Lag (prefocused): 0.096 seconds 0.112 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 OVF: Full AF lag, wide-area mode = 0.170s Live View: Full AF lag, Spot AF mode = 1.174s Prefocused = 0.385s
Startup Time: 0.9 seconds 1.5 seconds
Play -> Record Time: 0.6 seconds 0.7 seconds
Flash cycle time, full power: 2.3 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 560 shots 650 shots
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI90 Proprietary D-LI90
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI90 Lithium-ion rechargeable 1 x Proprietary D-LI90 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes Yes
Internal Charging Supported: No No
Software
Included Software: Software CD-ROM S-SW140  
OS Compatibility:    
Miscellaneous
Notes & Features: 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. New 51.4MP AA-filterless CMOS sensor, PRIME III processor, 27-point SAFOX 11 AF, 86K RGB metering, Full HD video up to 60i, tilting LCD monitor with Live View, 3fps full-res continuous burst mode.