Compare Sigma sd Quattro H vs Pentax 645D
Connectivity
Ports
HDMI + Remote Control + USB 3.0
Remote Control + USB 2.0
Construction
Form Factor
Mirrorless camera
Image Size
APS-H (26.6 x 17.9 mm)
Medium format (645)
Lens Mount
Sigma SA-mount
Microphone
None
Stereo
Sensor | Resolution
45 MP (6200 x 4152)
40 MP (7264 x 5440)
Sensor | Type
CMOS (Foveon X3)
CCD
Speakers
None
None
Dimensions
Size | Depth
91 mm / 3.58 in
119 mm / 4.69 in
Size | Height
95 mm / 3.74 in
117 mm / 4.61 in
Size | Width
147 mm / 5.79 in
156 mm / 6.14 in
Weight
1480 g / 52.30 oz
Display
Display Diagonal
3 inch
3 inch
Display Type
Fixed TFT LCD
Fixed TFT Color LCD with wide-viewing angle and with AR coating
Resolution
1,620,000 dots
921,000 dots
Viewfinder | Coverage
100%
98%
Viewfinder | Magnification
1.09x
0.85x
Viewfinder | Resolution
2,360,000 dots
Viewfinder | Type
Electronic
Optical (pentaprism)
Function
AE Bracketing
±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
9 focus points
11 focus points
Crop Factor
0.6
Exposure Compensation
±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
GPS
No
No
ISO Range
100 ~ 6400
200, 400, 800, 1600 (100 with boost)
Image Stabilization
No
No
Intervalometer
Yes
Processor
Dual TRUE III
Prime II
Touch Screen
No
No
Weather Resistance
Yes
Yes
Performance
Max Burst Rate
3.8 fps
1.1 fps
Storage
SD/SDHC/SDXC
SD/SDHC
Production
Battery
BP-61 lithium-ion battery & charger
Lithium-Ion D-LI90 rechargeable battery & charger
Debut
2016-02-23
2010-03-10
Reviews
Neofiliac score
49%
57%
Pros
- 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
- 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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