Compare Nikon D850 vs Sigma sd Quattro H vs Pentax 645D
Connectivity
Ports
HDMI + Headphone + Microphone + Remote Control + USB 3.0
HDMI + Remote Control + USB 3.0
Remote Control + USB 2.0
Wireless Connectivity
802.11b/g + NFC + Bluetooth 4.1 LE
Construction
Form Factor
DSLR camera
Mirrorless camera
Image Size
Full frame (35.9 x 23.9 mm)
APS-H (26.6 x 17.9 mm)
Medium format (645)
Lens Mount
Nikon F-mount
Sigma SA-mount
Microphone
Stereo
None
Stereo
Sensor | Resolution
45 MP (8256 x 5504)
45 MP (6200 x 4152)
40 MP (7264 x 5440)
Sensor | Type
BSI-CMOS
CMOS (Foveon X3)
CCD
Speakers
Mono
None
None
Dimensions
Size | Depth
79 mm / 3.11 in
91 mm / 3.58 in
119 mm / 4.69 in
Size | Height
124 mm / 4.88 in
95 mm / 3.74 in
117 mm / 4.61 in
Size | Width
146 mm / 5.75 in
147 mm / 5.79 in
156 mm / 6.14 in
Weight
1005 g / 35.51 oz
1480 g / 52.30 oz
Display
Display Diagonal
3.2 inch
3 inch
3 inch
Display Type
Tilting TFT LCD
Fixed TFT LCD
Fixed TFT Color LCD with wide-viewing angle and with AR coating
Resolution
2,359,000 dots
1,620,000 dots
921,000 dots
Viewfinder | Coverage
100%
100%
98%
Viewfinder | Magnification
0.75x
1.09x
0.85x
Viewfinder | Resolution
2,360,000 dots
Viewfinder | Type
Optical (pentaprism)
Electronic
Optical (pentaprism)
Function
AE Bracketing
±5 (2, 3, 5, 7 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
±3 (3, 5 frames at 1/3 EV steps)
±2 (3, 5 frames at 1/7 EV, 1/5 EV, 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
Autofocus
151 focus points
9 focus points
11 focus points
Crop Factor
1.0
0.6
Exposure Compensation
±5 (at 1/3 EV, 1/2 EV, 1 EV steps)
±5 (at 1/3 EV steps)
±5 (at 1/3 EV, 1/2 EV steps)
Exposure Mode
Auto / Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
GPS
No
No
No
ISO Range
64 ~ 25600 (expands to 32 ~ 102400)
100 ~ 6400
200, 400, 800, 1600 (100 with boost)
Image Stabilization
No
No
No
Intervalometer
Yes
Yes
Processor
Expeed 5
Dual TRUE III
Prime II
Touch Screen
Yes
No
No
Video Codecs
MPEG-4
Weather Resistance
Yes
Yes
Yes
Performance
Battery Life
1840 shots
Max Burst Rate
7.0 fps
3.8 fps
1.1 fps
Storage
SD/SDHC/SDXC (UHS-II supported) + XQD
SD/SDHC/SDXC
SD/SDHC
Production
Battery
EN-EL15a lithium-ion battery & charger
BP-61 lithium-ion battery & charger
Lithium-Ion D-LI90 rechargeable battery & charger
Debut
2017-07-25
2016-02-23
2010-03-10
Reviews
Neofiliac score
73%
49%
57%
Pros
- Exceptional battery life
- 64 base ISO
- High 45 MP resolution
- Weather-sealed
- Supports both WiFi and Bluetooth
- Exceptional ergonomics
- High 45 MP resolution
- Weather-sealed
- Viewfinder with great 1.09x magnification
- Foveon sensor
- Medium format look
- Weather-sealed
- Affordable for a 645 DSLR
Cons
- Low 7.0 fps burst rate
- Very heavy
- Viewfinder with low 0.75x magnification
- Menu not touch-enabled
- Very low 3.8 fps burst rate
- Low resolution EVF
- Menu not touch-enabled
- Very low 1.1 fps burst rate
- Very large in size
- Very heavy
- Viewfinder coverage is cropped at 98%
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