• Medium format 1,436.6mm2
  • 51.4 megapixels
  • ISO 100 - 204,800
  • 35mm 858.0mm2
  • 24.6 megapixels
  • ISO 100 - 25,600
  • Detailed specifications
  • Pentax 645Z
  • Sigma fp
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax 645D
645D vs 645Z
 
Successor:    
General
Model Number: 645Z fp
Alternate Model Number(s):    
Camera Format: Pro SLR Compact System Camera
Currently Manufactured: Yes Yes
Retail Price: $8499.95 $1899.00
Street Price: $4,845.43 $1,699.00
Date Available: 2014-06-15 2019-10-25
Tripod Mount: Yes Yes
Weight: 54.9 oz (1,555 g)
includes batteries
14.9 oz (422 g)
includes batteries
Size: 6.1 x 4.6 x 4.8 in.
(156 x 117 x 123 mm)
4.4 x 2.8 x 1.8 in.
(113 x 70 x 45 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony  
Effective Megapixels: 51.4 24.6
Sensor Format: Medium format 35mm
Sensor size: 1436.64mm2 (43.80mm x 32.80mm) 858.01mm2 (35.90mm x 23.90mm)
Approximate Pixel Pitch: 5.31 microns 5.98 microns
Focal Length Multiplier: 0.8x 1.0x
Aspect Ratio: 4:3 3:2
Color Filter Type: RGBG Bayer
Anti Aliasing Filter: None None
Self-Cleaning: Yes No
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No No
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)
6000 x 4000 (24.0 MP, 3:2),
4240 x 2392 (10.1 MP, Other),
3008 x 2000 (6.0 MP, 3:2),
6000 x 3376 (20.3 MP, 16:9),
4240 x 2392 (10.1 MP, Other),
3008 x 1688 (5.1 MP, 16:9),
6000 x 2576 (15.5 MP, Other),
4240 x 1824 (7.7 MP, Other),
3008 x 1288 (3.9 MP, Other),
5664 x 4000 (22.7 MP, Other),
4000 x 2832 (11.3 MP, Other),
2832 x 2000 (5.7 MP, Other),
5344 x 4000 (21.4 MP, Other),
3776 x 2832 (10.7 MP, 4:3),
2672 x 2000 (5.3 MP, Other),
4672 x 4000 (18.7 MP, Other),
3312 x 2832 (9.4 MP, Other),
2336 x 2000 (4.7 MP, Other),
4000 x 4000 (16.0 MP, 1:1),
2832 x 2832 (8.0 MP, 1:1),
2000 x 2000 (4.0 MP, 1:1)
Image File Format: JPEG, 14-bit PEF / DNG RAW, TIFF JPEG (EXIF 2.3), RAW (lossless compressed DNG (12 or 14 bit)), RAW+JPEG
Continuous-mode frames/second: 3.1 18.0
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 (120p/​100p/​60p/​50p/​30p/​25p/​24p)
Movie File Format: MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record CinemaDNG (8/10/12-bit) / MOV H.264( ALL-I /GOP) with Linear PCM stereo audio (48KHz, 16-bit)
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 L Mount
Lens: n/a n/a
Focal Length (35mm equivalent):    
Focal Length (actual):    
Zoom Ratio:    
Aperture Range:    
Integrated ND Filter: 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) Contrast Detect AF: Auto, 49-points selection mode, Free Movement mode, Face / Eye Detection AF mode, Tracking AF mode
Auto Focus Assist Light? No No
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD No / 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) Optional LCD View Finder LVF-11 can be attached to rear LCD
Focus Peaking: Yes Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.78x  
Viewfinder Magnification (nominal/claimed): 0.62x  
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 3.2 3.2
Rear Display Resolution: 1,036,800 dots (345,600 px) 2,100,000 dots
Touchscreen: No Yes
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 25600
Minimum ISO (native): 100 100
ISO Settings: Auto, 100-204800 in 1, 1/2 or 1/3EV steps Auto, 100-25600, expandable to ISO 6, 12, 25, 50, 51200, 102400
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 1/8000 - 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 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, Teal & Orange, Sunset Red, Forest Green,FOV Classic Blue, FOV Classic Yellow, Monochrome; Fill Light, Shading Correction, HDR shooting
Self Timer: 2 or 12 seconds 2 or 10 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 S-TTL automatic light control, Manual, Wireless flash, Multi-emission; Red-eye effect reduction, Slow synchronization, 2nd Curtain Synchronization
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: n/a n/a
Max Flash Sync: 1/125 1/30 (1/15 in 14-bit mode)
Flash Exposure Compensation: -2 to +1 EV +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot shoe, X-sync socket Hot Shoe Unit HU-11 (supplied)
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support: UHS-I UHS-II
Other Memory:    
Dual Card Slots: Yes No
RAW Capture Support: Yes Yes
Uncompressed Format: 14-bit PEF / DNG RAW, TIFF RAW (lossless compressed DNG (12 or 14 bit)), RAW+JPEG
Movie File Format: MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record CinemaDNG (8/10/12-bit) / MOV H.264( ALL-I /GOP) with Linear PCM stereo audio (48KHz, 16-bit)
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: 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 CR-41)
Connections (extended): Micro (Type-D) HDMI, DC input, Stereo microphone jack, wired remote socket USB Type-C (USB3.1 Gen1), Micro HDMI (Type D), 3.5mm stereo mic/remote jack
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 18.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 12 12
RAW shooting speed in burst mode (fps): 3.1 18.0
Buffer size for RAW shooting in burst mode (frames): 10 12
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-51
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI90 Lithium-ion rechargeable 1 x Proprietary BP-51 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:    
OS Compatibility:    
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.