• Medium format 1,436.6mm2
  • 51.4 megapixels
  • ISO 100 - 204,800
  • APS-H 476.1mm2
  • 25.6 megapixels
  • ISO 100 - 6400
  • Detailed specifications
  • Pentax 645Z
  • Sigma sd Quattro H
Links
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax 645D
645D vs 645Z
 
Successor:    
General
Model Number: 645Z sd Quattro H
Alternate Model Number(s):    
Camera Format: Pro SLR Compact System Camera
Currently Manufactured: Yes Yes
Retail Price: $8499.95 $1200.00
Street Price: $4,845.43 $1,199.00
Date Available: 2014-06-15 2017-01-15
Tripod Mount: Yes Yes
Weight: 54.9 oz (1,555 g)
includes batteries
22.4 oz (635 g)
Size: 6.1 x 4.6 x 4.8 in.
(156 x 117 x 123 mm)
5.8 x 3.7 x 3.6 in.
(147 x 95 x 91 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony Foveon X3 Quattro
Effective Megapixels: 51.4 25.6
Sensor Format: Medium format APS-H
Sensor size: 1436.64mm2 (43.80mm x 32.80mm) 476.14mm2 (26.60mm x 17.90mm)
Approximate Pixel Pitch: 5.31 microns 4.30 microns
Focal Length Multiplier: 0.8x 1.3x
Aspect Ratio: 4:3 3:2
Color Filter Type: RGBG Full Color
Anti Aliasing Filter: None Not needed
Self-Cleaning: Yes No
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No Yes
DxO Sensor Score: 101  
DxO Color Depth Score (bits): 26.0  
DxO Dynamic Range Score (evs): 14.7  
DxO Maximum Effective ISO Score (iso): 4,505  
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)
6192 x 4128 (25.6 MP, 3:2),
5504 x 4128 (22.7 MP, 4:3),
6192 x 3480 (21.5 MP, 16:9),
4128 x 4128 (17.0 MP, 1:1),
5152 x 4128 (21.3 MP, 5:4),
6192 x 2648 (16.4 MP, Other),
8768 x 5840 (51.2 MP, 3:2),
7792 x 5840 (45.5 MP, 4:3),
8768 x 4928 (43.2 MP, 16:9),
5840 x 5840 (34.1 MP, 1:1),
8768 x 3752 (32.9 MP, Other),
7296 x 5840 (42.6 MP, 5:4)
Image File Format: JPEG, 14-bit PEF / DNG RAW, TIFF JPEG (EXIF 2.3), Lossless compressed 14-bit X3F or Uncompressed 12-bit DNG, RAW(X3F)+JPEG
Continuous-mode frames/second: 3.1 n/a
Video Capture
Can take movies: Yes No
Movie Resolution: 1920x1080 (60i/​50i/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p)
Movie File Format: 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 645 bayonet Sigma SA bayonet
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:
Digital Zoom Values:    
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) Hybrid Phase/Contrast Detect AF: 9 points select mode, Free move mode (It is possible to change the size of Focus Frame to Spot, Regular and Large), Face Detection AF Mode
Auto Focus Assist Light? No Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD EVF / 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) EVF: 2,360K-dot LCD, 100% coverage, 0.96x magnification, 21mm eyepoint, -4 to +2 diopter
Focus Peaking: Yes Yes
EVF Resolution: n/a 2,360,000 dots
Viewfinder Magnification (35mm equivalent): 0.78x 0.74x
Viewfinder Magnification (nominal/claimed): 0.62x 0.96x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.2 3.0
Rear Display Resolution: 1,036,800 dots (345,600 px) 1,620,000 dots
Touchscreen: No No
Articulating Screen: Yes No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x  
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 204800 6400
Minimum ISO (native): 100 100
ISO Settings: Auto, 100-204800 in 1, 1/2 or 1/3EV steps Auto, 100-6400 in 1/3 EV steps; Auto has programmable High/Low limits
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, Auto (Lighting Source Priority), Daylight, Shade, Overcast, Incandescent, Fluorescent, Color Temperature, Flash, Custom 1/2/3
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: 86K-pixel RBG sensor: Multi-segment metering, Center-weighted metering, Spot metering Evaluative, center-weighted average, 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 & 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) Color modes: Standard, Vivid, Neutral, Portrait, Landscape, Cinema, Sunset Red, Forest Green, FOV Classic Blue, FOV Classic Yellow, Monochrome
Self Timer: 2 or 12 seconds 2 or 10 seconds
Time Lapse (intervalometer): 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 n/a
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: n/a n/a
Max Flash Sync: 1/125 1/180
Flash Exposure Compensation: -2 to +1 EV +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot shoe, X-sync socket Hot Shoe, PC Socket
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support: UHS-I  
Other Memory:    
Dual Card Slots: Yes No
RAW Capture Support: Yes Yes
Uncompressed Format: 14-bit PEF / DNG RAW, TIFF Lossless compressed 14-bit X3F or Uncompressed 12-bit DNG, RAW(X3F)+JPEG
Movie File Format: 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 No
Headphone Jack: No No
External Connections: USB 3.0 Super Speed USB 3.0 Super Speed
PictBridge Compliant: No No
DPOF Compliant: No Yes
Remote Control: Yes Yes
Remote Control Type: Optional wired or wireless Optional wired (Cable Release Switch CR-3)
Connections (extended): Micro (Type-D) HDMI, DC input, Stereo microphone jack, wired remote socket Mini (Type-C) HDMI
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.35  
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  
Camera penalizes early shutter press? Yes
JPEG shooting speed in burst mode (fps, max resolution): 3.1  
Buffer size for JPEG shooting in burst mode (frames, max resolution): 12  
RAW shooting speed in burst mode (fps): 3.1 4.4
Buffer size for RAW shooting in burst mode (frames): 10 8
RAW+JPEG shooting speed in burst mode (fps): 3.1  
Buffer Size for RAW+JPEG shooting in burst mode (frames): 10  
Shutter lag (full AF, wide/mid): 0.16 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  
Shutter Lag (manual focus): 0.117 seconds  
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused): 0.112 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  
Play -> Record Time: 0.7 seconds  
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 650 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI90 Proprietary BP-61
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI90 Lithium-ion rechargeable 1 x Proprietary BP-61 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:   SIGMA Photo Pro Download
OS Compatibility:   Windows, Mac OS
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.