• Medium format 1,452.0mm2
  • 40.0 megapixels
  • ISO 200 - 1000
  • 35mm 861.6mm2
  • 24.3 megapixels
  • ISO 100 - 12,800
  • Detailed specifications
  • Pentax 645D
  • Nikon D750
Links
Prices: Compare Prices Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor: Pentax 645Z
645D vs 645Z
Nikon D780
D750 vs D780
General
Model Number: 645D D750
Alternate Model Number(s):    
Camera Format: Pro SLR SLR
Currently Manufactured: No Yes
Retail Price: $9995.95 $3599.95
Street Price: $3,599.00 $1,699.95
Date Available: 2010-12-15 2014-09-30
Tripod Mount: Yes Yes
Weight: 52.2 oz (1,480 g)
includes batteries
54.7 oz (1,550 g)
includes batteries, kit lens
Size: 6.1 x 4.6 x 4.7 in.
(156 x 117 x 119 mm)
5.5 x 4.4 x 3.1 in.
(141 x 113 x 78 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CMOS
Sensor Manufacturer: Kodak KAF-40000 Sony
Effective Megapixels: 40.0 24.3
Sensor Format: Medium format 35mm
Sensor size: 1452mm2 (44.00mm x 33.00mm) 861.6mm2 (35.90mm x 24.00mm)
Approximate Pixel Pitch: 6.06 microns 5.97 microns
Focal Length Multiplier: 0.8x 1.0x
Aspect Ratio: 4:3 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: None Fixed
Self-Cleaning: Yes Yes
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No No
DxO Sensor Score: 82 93
DxO Color Depth Score (bits): 24.6 24.8
DxO Dynamic Range Score (evs): 12.6 14.5
DxO Maximum Effective ISO Score (iso): 1,262 2,956
Image Capture
Image Resolution: 7264 x 5440 (39.5 MP, Other),
6528 x 4896 (32.0 MP, 4:3),
5376 x 4032 (21.7 MP, 4:3),
4224 x 3168 (13.4 MP, 4:3),
3072 x 2304 (7.1 MP, 4:3)
6016 x 4016 (24.2 MP, 3:2),
4512 x 3008 (13.6 MP, 3:2),
3008 x 2008 (6.0 MP, 3:2),
5008 x 3336 (16.7 MP, 3:2),
3752 x 2504 (9.4 MP, 3:2),
2504 x 1664 (4.2 MP, 3:2),
3936 x 2624 (10.3 MP, 3:2),
2944 x 1968 (5.8 MP, 3:2),
1968 x 1312 (2.6 MP, 3:2)
Image File Format: JPEG, 14-bit PEF / DNG Raw JPEG (EXIF 2.3), RAW (NEF), lossless compressed, compressed 14 or 12-bit; RAW+JPEG
Continuous-mode frames/second: 1.1 6.6
Video Capture
Can take movies: No Yes
Movie Resolution: 1920x1080 (60p/​50p/​30p/​25p/​24p)
1280x720 (60p/​50p)
Movie File Format:   MOV (H.264/MPEG-4 AVC video with Linear PCM audio)
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: Pentax 645 bayonet Nikon F
Lens: n/a Nikkor AF-S 24-120mm f/4G ED VR; 17 elements in 13 groups, including 3 aspherical and 2 ED elements
Focal Length (35mm equivalent):   24 - 120mm
Focal Length (actual):   24 - 120mm
Zoom Ratio:   5.00x
Aperture Range:   f/4 - f/22
Integrated ND Filter: No No
Normal Focus Range:   45 cm to Infinity
17.7 in to Infinity
Macro Focus Range:    
Filter Thread: n/a 77.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No No
Digital Zoom Values: n/a n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 11-point SAFOX IX+ Phase Difference Detection, single / continuous OVF: 51-point (15 cross-type, f/8 supported by 11 points) TTL phase detection with 3D focus tracking via Nikon Advanced Multi-CAM 3500FX II; Contrast-detect AF in Live View mode
Auto Focus Assist Light? No Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD (playback only) Optical / LCD
Viewfinder Type: Trapezoid prism finder w/ Natural-Bright-Matte focusing screen; Coverage: 98%; Magnification: 0.62X (with D FA645 55mm F2.8 lens at infinity) SLR type; fixed eye-level pentaprism, 100% coverage, 0.70x magnification, 21mm eyepoint, -3 to +1 diopter
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.78x 0.70x
Viewfinder Magnification (nominal/claimed): 0.62x 0.70x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.2
Rear Display Resolution: 921,000 dots (307,000 px) 1,228,800 dots (307,200 px)
Touchscreen: No No
Articulating Screen: No Yes
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom:    
Top Deck Display: Yes Yes
Exposure
Maximum ISO (native): 1000 12800
Minimum ISO (native): 200 100
ISO Settings: Auto (with programmable limits), 200 to 1000 in 1, 1/2 or 1/3 EV steps; expandable to 100 and 1600 ISO 100 - 12,800, Lo-1 (ISO 50), Hi-1 (ISO 25,600), Hi-2 (ISO 51,200), Auto (adjustable)
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Fluorescent ( D / N / W / L), Tungsten, Flash, CTE, Manual 1 / 2 / 3, Color temperature setting 1 / 2 / 3 w/ adjustment Auto (2 types), Incandescent, Fluorescent (7 types), Direct Sunlight, Flash, Cloudy, Shade, Preset manual (up to 6 values can be stored), Color temperature (2,500K-10,000K)
Shutter Speed Range: 1/4000 - 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: 77-segment multi, center-weighted, spot 91,000-pixel RGB sensor; 3D Color Matrix Metering III, Center-weighted, Spot (1.5%) centered on selected focus area; Highlight-weighted
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes:   Scene (portrait, landscape, child, sports, close up, night portrait, night landscape, party/indoor, beach/snow, sunset, dusk/dawn, pet, candlelight, blossom, autumn colors, food), Effects, HDR, Active D-Lighting
Self Timer: 2 or 12 seconds 2/5/10/20 seconds
Time Lapse (intervalometer): Yes Yes
High Resolution Composite: No No
Flash
Built-in Flash: No Yes
Flash Modes: P-TTL, high-speed sync, wireless sync w/ Pentax flash Front-curtain sync, Slow sync, Rear-curtain sync, Red-eye reduction, Red-eye reduction with slow sync; built-in flash supports wireless Commander mode
Flash Guide Number (ISO 100): n/a 12.0 m / 39.4 ft.
Flash Range Description: n/a Lens aperture dependent; GN = 12m or 39 ft (ISO 100)
Max Flash Sync: 1/125 1/200 (up to 1/250 with reduced range)
Flash Exposure Compensation:   -3 to +1 EV in 0.3EV steps
External Flash Connection: Hot shoe, X-sync socket ISO-type Hot Shoe
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support: No UHS support UHS-I
Other Memory:    
Dual Card Slots: Yes Yes
RAW Capture Support: Yes Yes
Uncompressed Format: 14-bit PEF / DNG Raw RAW (NEF), lossless compressed, compressed 14 or 12-bit; RAW+JPEG
Movie File Format:   MOV (H.264/MPEG-4 AVC video with Linear PCM audio)
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 Yes
Headphone Jack: No Yes
External Connections: USB 2.0 High Speed USB 2.0 High Speed,WiFi
PictBridge Compliant: No Yes
DPOF Compliant: No Yes
Remote Control: Yes Yes
Remote Control Type: Optional IR or wired Via Wi-Fi; optional wired or wireless
Connections (extended): DC input Type-C Mini HDMI, Accessory Terminal, 3.5mm Stereo Mic Jack, 3.5mm Stereo Headphone Jack, Built-in Wi-Fi
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 1.09 <0.3
Cycle time for RAW shooting in single shot mode (seconds per frame): 1.10 <0.3
Buffer size for RAW shooting in single shot mode (frames): 17  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): 1.09 <0.3
Camera penalizes early shutter press? Yes No
JPEG shooting speed in burst mode (fps, max resolution): 1.1 6.6
Buffer size for JPEG shooting in burst mode (frames, max resolution): 19 40
RAW shooting speed in burst mode (fps): 1.1 6.6
Buffer size for RAW shooting in burst mode (frames): 16 14
RAW+JPEG shooting speed in burst mode (fps): 1.1 6.7
Buffer Size for RAW+JPEG shooting in burst mode (frames): 15 10
Shutter lag (full AF, wide/mid): 0.16 seconds 0.21 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):   1.77 seconds
Shutter lag (prefocused, live view - DSLR):   0.174 seconds
Shutter Lag (manual focus): 0.141 seconds 0.055 seconds
Shutter lag (full AF, with flash):   0.25 seconds
Shutter Lag (prefocused): 0.142 seconds 0.054 seconds
Shutter Lag (notes): Full Autofocus lag, Auto Area AF = 0.180s OVF: - Full AF shutter lag, wide-area AF mode = 0.228s Live View: - Full AF shutter lag = 1.769s - Prefocused: 0.174s
Startup Time: 0.7 seconds 0.5 seconds
Play -> Record Time: 0.3 seconds 0.5 seconds
Flash cycle time, full power:   2.4 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 800 shots 1230 shots
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI90 Proprietary EN-EL15
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable or MB-D14 battery grip
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: PENTAX Digital Camera Utility 4 (Ver.4.20) Nikon ViewNX 2 CD-ROM
OS Compatibility:    
Miscellaneous
Notes & Features: Compatible with PENTAX 645AF2, 645AF, and 645A mount lenses. Has dual SD/SDHC card slots. EXPEED 4 processor, 6.5fps burst rate, 1080p60 movies, built-in Wi-Fi, tilting 3.2-inch 1229K-dot LCD, improved 51-point AF, highlight-weighted metering, dual SD card slots. Available body only or bundled with AF-S 24-120mm f/4 lens.