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Compare Pentax 645D vs Sigma sd Quattro H vs Pentax 645D

Connectivity

Ports
Remote Control + USB 2.0
HDMI + Remote Control + USB 3.0
Remote Control + USB 2.0

Construction

Form Factor
Mirrorless camera
Image Size
Medium format (645)
APS-H (26.6 x 17.9 mm)
Medium format (645)
Lens Mount
Sigma SA-mount
Microphone
Stereo
None
Stereo
Sensor | Resolution
40 MP (7264 x 5440)
45 MP (6200 x 4152)
40 MP (7264 x 5440)
Sensor | Type
CCD
CMOS (Foveon X3)
CCD
Speakers
None
None
None

Dimensions

Size | Depth
119 mm / 4.69 in
91 mm / 3.58 in
119 mm / 4.69 in
Size | Height
117 mm / 4.61 in
95 mm / 3.74 in
117 mm / 4.61 in
Size | Width
156 mm / 6.14 in
147 mm / 5.79 in
156 mm / 6.14 in
Weight
1480 g / 52.30 oz
1480 g / 52.30 oz

Display

Display Diagonal
3 inch
3 inch
3 inch
Display Type
Fixed TFT Color LCD with wide-viewing angle and with AR coating
Fixed TFT LCD
Fixed TFT Color LCD with wide-viewing angle and with AR coating
Resolution
921,000 dots
1,620,000 dots
921,000 dots
Viewfinder | Coverage
98%
100%
98%
Viewfinder | Magnification
0.85x
1.09x
0.85x
Viewfinder | Resolution
2,360,000 dots
Viewfinder | Type
Optical (pentaprism)
Electronic
Optical (pentaprism)

Function

AE Bracketing
±2 (3, 5 frames at 1/7 EV, 1/5 EV, 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
11 focus points
9 focus points
11 focus points
Crop Factor
0.6
0.6
Exposure Compensation
±5 (at 1/3 EV, 1/2 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
200, 400, 800, 1600 (100 with boost)
100 ~ 6400
200, 400, 800, 1600 (100 with boost)
Image Stabilization
No
No
No
Intervalometer
Yes
Yes
Processor
Prime II
Dual TRUE III
Prime II
Touch Screen
No
No
No
Weather Resistance
Yes
Yes
Yes

Performance

Max Burst Rate
1.1 fps
3.8 fps
1.1 fps
Storage
SD/SDHC
SD/SDHC/SDXC
SD/SDHC

Production

Battery
Lithium-Ion D-LI90 rechargeable battery & charger
BP-61 lithium-ion battery & charger
Lithium-Ion D-LI90 rechargeable battery & charger
Debut
2010-03-10
2016-02-23
2010-03-10

Reviews

Neofiliac score
57%
49%
57%
Pros
  • Medium format look
  • Weather-sealed
  • Affordable for a 645 DSLR
  • 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 1.1 fps burst rate
  • Very large in size
  • Very heavy
  • Viewfinder coverage is cropped at 98%
  • 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%

Price

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