• Medium format 1,436.6mm2
  • 51.4 megapixels
  • ISO 100 - 204,800
  • APS-C 369.0mm2
  • 20.9 megapixels
  • ISO 100 - 51,200
  • Detailed specifications
  • Pentax 645Z
  • Nikon D500
Links
Prices: Compare Prices Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax 645D
645D vs 645Z 		Nikon D300S
D300S vs D500
Successor:    
General
Model Number: 645Z D500
Alternate Model Number(s):    
Camera Format: Pro SLR Pro SLR
Currently Manufactured: Yes Yes
Retail Price: $8499.95 $1999.95
Street Price: $4,845.43 $1,598.45
Date Available: 2014-06-15 2016-03-15
Tripod Mount: Yes Yes
Weight: 54.9 oz (1,555 g)
includes batteries 		30.2 oz (856 g)
includes batteries
Size: 6.1 x 4.6 x 4.8 in.
(156 x 117 x 123 mm) 		5.8 x 4.5 x 3.2 in.
(147 x 115 x 81 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony  
Effective Megapixels: 51.4 20.9
Sensor Format: Medium format APS-C
Sensor size: 1436.64mm2 (43.80mm x 32.80mm) 368.95mm2 (23.50mm x 15.70mm)
Approximate Pixel Pitch: 5.31 microns 4.22 microns
Focal Length Multiplier: 0.8x 1.5x
Aspect Ratio: 4:3 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: None None
Self-Cleaning: Yes Yes
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No No
DxO Sensor Score: 101 83
DxO Color Depth Score (bits): 26.0 24.0
DxO Dynamic Range Score (evs): 14.7 14.0
DxO Maximum Effective ISO Score (iso): 4,505 1,324
Image Capture
Image Resolution: 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) 		5568 x 3712 (20.7 MP, 3:2),
4176 x 2784 (11.6 MP, 3:2),
2784 x 1856 (5.2 MP, 3:2),
4272 x 2848 (12.2 MP, 3:2),
3200 x 2136 (6.8 MP, 3:2),
2128 x 1424 (3.0 MP, Other)
Image File Format: JPEG, 14-bit PEF / DNG RAW, TIFF JPEG (EXIF 2.3), NEF (RAW), 12 or 14 bit, lossless compressed, compressed, or uncompressed, L/M/S; RAW+JPEG, TIFF
Continuous-mode frames/second: 3.1 10.2
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (60i/​50i/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p) 		3840x2160 (30p/​25p/​24p)
1920x1080 (60p/​50p/​30p/​25p/​24p)
1280x720 (60p/​50p)
Movie File Format: MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record MOV (Video: H.264/MPEG-4 AVC; Audio: Stereo Linear PCM)
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 645 bayonet Nikon F
Lens: n/a n/a
Focal Length (35mm equivalent):    
Focal Length (actual):    
Zoom Ratio:    
Aperture Range:    
Integrated ND Filter: No No
Normal Focus Range:    
Macro Focus Range:    
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No
Digital Zoom Values:   n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 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) OVF: Nikon Advanced Multi-CAM 20K autofocus sensor module with TTL phase detection fine-tuning, and 153 focus points (including 99 cross-type sensors and 15 sensors that support f/8), of which 55 (35 cross-type sensors and 9 f/8 sensors) are available for selection; ; Contrast-detect AF in Live View mode
Auto Focus Assist Light? No No
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD Optical / LCD
Viewfinder Type: 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) SLR type: eye-level pentaprism, 100% coverage, 1.0x magnification (~0.67x 35mm eq.), 16mm eyepoint, -2 to +1 diopter
Focus Peaking: Yes No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.78x 0.67x
Viewfinder Magnification (nominal/claimed): 0.62x 1.00x
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) 2,359,000 dots (589,750 px)
Touchscreen: No Yes
Articulating Screen: Yes Yes
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x  
Top Deck Display: Yes Yes
Exposure
Maximum ISO (native): 204800 51200
Minimum ISO (native): 100 100
ISO Settings: Auto, 100-204800 in 1, 1/2 or 1/3EV steps Auto, ISO 100 - 51200, expandable to Lo-1 ISO 50 to Hi-5 ISO 1,638,400
Auto ISO Mode: Yes Yes
White Balance 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 Auto (3 types), Cloudy, Shade, Direct Sunlight, Flash, Fluorescent (7 types), Incandescent, Kelvin Color Temperature (2,500K-10,000K), Preset manual (up to 6); Fine tuning available.
Shutter Speed Range: 1/4000 - 30 sec 1/8000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 5.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: 86K-pixel RBG sensor: Multi-segment metering, Center-weighted metering, Spot metering TTL exposure metering using RGB sensor with approximately 180K (180,000) pixels; Matrix: 3D color matrix metering III (type G, E, and D lenses), color matrix metering III (other CPU lenses); Center-weighted (weight of approximately 75% given to 8mm circle in center of frame. Diameter of circle can be changed to 6, 10, or 13mm, or weighting can be based on average of entire frame (non-CPU lenses use 8-mm circle); Spot: meters circle with diameter of about 3.5mm (about 2.5% of frame) centered on selected focus point (on center focus point when non-CPU lens is used); Highlight-weighted: Available with type G, E, and D lenses
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: 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) N/A
Self Timer: 2 or 12 seconds 2/5/10/20s; 1-9 exposures at intervals of 0.5, 1, 2, or 3 seconds
Time Lapse (intervalometer): Yes Yes
High Resolution Composite: No No
Flash
Built-in Flash: No No
Flash Modes: P-TTL; high-speed sync, wireless sync supported with compatible flash unit Front curtain sync, slow sync, rear-curtain sync, red-eye reduction, red-eye reduction with slow sync, slow rear-curtain sync, Auto FP High-Speed Sync supported
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: n/a n/a
Max Flash Sync: 1/125 1/250
Flash Exposure Compensation: -2 to +1 EV -3 to +1 EV in 0.3EV steps
External Flash Connection: Hot shoe, X-sync socket Hot Shoe, PC-sync Terminal
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC / SDXC XQD / SD / SDHC / SDXC
UHS Support: UHS-I UHS-II
Other Memory:   Dual slots, XQD+SD
Dual Card Slots: Yes Yes
RAW Capture Support: Yes Yes
Uncompressed Format: 14-bit PEF / DNG RAW, TIFF NEF (RAW), 12 or 14 bit, lossless compressed, compressed, or uncompressed, L/M/S; RAW+JPEG, TIFF
Movie File Format: MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record MOV (Video: H.264/MPEG-4 AVC; Audio: Stereo Linear PCM)
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No Yes
Bluetooth: No Yes
Built-In GPS: No No
Microphone Jack: Yes Yes
Headphone Jack: No Yes
External Connections: USB 3.0 Super Speed USB 3.0 Super Speed,Bluetooth,WiFi
PictBridge Compliant: No Yes
DPOF Compliant: No Yes
Remote Control: Yes Yes
Remote Control Type: Optional wired or wireless Optional: wired or wireless
Connections (extended): Micro (Type-D) HDMI, DC input, Stereo microphone jack, wired remote socket Type-C Mini HDMI with uncompressed video support, 10-pin Remote Terminal, PC Sync
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.35 <0.3
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.33  
Buffer size for RAW shooting in single shot mode (frames): 10  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): 0.33 <0.3
Camera penalizes early shutter press? Yes No
JPEG shooting speed in burst mode (fps, max resolution): 3.1 10.2
Buffer size for JPEG shooting in burst mode (frames, max resolution): 12 200
RAW shooting speed in burst mode (fps): 3.1 10.2
Buffer size for RAW shooting in burst mode (frames): 10 200
RAW+JPEG shooting speed in burst mode (fps): 3.1 10.2
Buffer Size for RAW+JPEG shooting in burst mode (frames): 10 27
Shutter lag (full AF, wide/mid): 0.16 seconds 0.17 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR): 1.17 seconds  
Shutter lag (prefocused, live view - DSLR): 0.385 seconds 0.103 seconds
Shutter Lag (manual focus): 0.117 seconds 0.049 seconds
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused): 0.112 seconds 0.049 seconds
Shutter Lag (notes): OVF: Full AF lag, wide-area mode = 0.170s Live View: Full AF lag, Spot AF mode = 1.174s Prefocused = 0.385s  
Startup Time: 1.5 seconds 0.3 seconds
Play -> Record Time: 0.7 seconds 0.2 seconds
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 650 shots 1240 shots
Battery Life, Video:   50 minutes
Battery Form Factor: Proprietary D-LI90 Proprietary EN-EL15, optional MB-D17 battery grip
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI90 Lithium-ion rechargeable 1 x Proprietary EN-EL15 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:   ViewNX-i, ViewNX-Movie Editor, Capture NX-D, Nikon Transfer 2, Picture Control Utility 2 downloads
OS Compatibility:   Windows 7/8/10, Mac OS X 10.9.5-10.11.5
Miscellaneous
Notes & Features: 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.