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Compare Pentax 645Z vs Nikon D850 vs Nikon D810

Connectivity

Ports
HDMI + Microphone + Remote Control + USB 3.0
HDMI + Headphone + Microphone + Remote Control + USB 3.0
HDMI + Remote Control + USB 3.0
Wireless Connectivity
802.11b/g + NFC + Bluetooth 4.1 LE
via WT-5A or Eye-Fi

Construction

Form Factor
DSLR camera
DSLR camera
Image Size
Medium format (645)
Full frame (35.9 x 23.9 mm)
Full frame (35.9 x 24 mm)
Lens Mount
PENTAX 645AF2
Nikon F-mount
Nikon F-mount
Microphone
Mono
Stereo
Stereo
Sensor | Resolution
51 MP (8256 x 6192)
45 MP (8256 x 5504)
36 MP (7360 x 4912)
Sensor | Type
CMOS
BSI-CMOS
CMOS
Speakers
Stereo
Mono
Mono

Dimensions

Size | Depth
123 mm / 4.84 in
79 mm / 3.11 in
82 mm / 3.23 in
Size | Height
117 mm / 4.61 in
124 mm / 4.88 in
123 mm / 4.84 in
Size | Width
156 mm / 6.14 in
146 mm / 5.75 in
146 mm / 5.75 in
Weight
1550 g / 54.77 oz
1005 g / 35.51 oz
980 g / 34.63 oz

Display

Display Diagonal
3.2 inch
3.2 inch
3.2 inch
Display Type
Tilting TFT LCD
Tilting TFT LCD
Fixed TFT-LCD (WRGB)
Resolution
1,037,000 dots
2,359,000 dots
1,229,000 dots
Viewfinder | Coverage
98%
100%
100%
Viewfinder | Magnification
0.62x
0.75x
0.7x
Viewfinder | Type
Optical (pentaprism)
Optical (pentaprism)
Optical (tunnel)

Function

AE Bracketing
±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV, 1 EV, 2 EV steps)
±5 (2, 3, 5, 7 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
±5 (2, 3, 5, 7 frames at 1/3 EV, 2/3 EV, 1 EV steps)
Autofocus
27 focus points
151 focus points
51 focus points
Crop Factor
0.6
1.0
1.0
Exposure Compensation
±5 (at 1/3 EV, 1/2 EV steps)
±5 (at 1/3 EV, 1/2 EV, 1 EV steps)
±5 (at 1/3 EV, 1/2 EV, 1 EV steps)
Exposure Mode
Auto / Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
Flash
Built-in
GPS
Optional via O-GPS1
No
Optional via GP-1 or GP-1A
ISO Range
to, ISO 100 ~ 204800
64 ~ 25600 (expands to 32 ~ 102400)
64 ~ 12800
Image Stabilization
No
No
No
Intervalometer
Yes
Yes
Processor
PRIME III
Expeed 5
EXPEED 4
Touch Screen
No
Yes
No
Video Codecs
MPEG-4, H.264
MPEG-4
MPEG-4, H.264
Weather Resistance
Yes
Yes
Yes

Performance

Battery Life
650 shots
1840 shots
1200 shots
Flash Range
12.00 m
Max Burst Rate
3.0 fps
7.0 fps
5.0 fps
Storage
Dual SD/SDHC/SDXC slots
SD/SDHC/SDXC (UHS-II supported) + XQD
SD/SDHC/SDXC, CompactFlash (UDMA compliant)

Production

Battery
D-LI90 lithium-ion battery and charger
EN-EL15a lithium-ion battery & charger
EN-EL15 lithium-ion battery & charger
Debut
2014-04-15
2017-07-25
2014-06-26

Reviews

Neofiliac score
62%
73%
63%
Pros
  • Long battery life
  • Medium format look
  • Exceptionally high 51 MP resolution
  • Weather-sealed
  • Affordable for a 645 DSLR
  • Exceptional battery life
  • 64 base ISO
  • High 45 MP resolution
  • Weather-sealed
  • Supports both WiFi and Bluetooth
  • Exceptional ergonomics
  • Exceptional battery life
  • 64 base ISO
  • Weather-sealed
  • Superb ergonomics
Cons
  • Menu not touch-enabled
  • Very low 3.0 fps burst rate
  • Very large in size
  • Very heavy
  • Viewfinder coverage is cropped at 98%
  • Viewfinder with low 0.62x magnification
  • Low 7.0 fps burst rate
  • Very heavy
  • Viewfinder with low 0.75x magnification
  • Menu not touch-enabled
  • Very low 5.0 fps burst rate
  • Very heavy
  • Viewfinder with low 0.7x magnification

Price

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