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

Connectivity

Ports
HDMI + Microphone + Remote Control + USB 3.0
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
PENTAX 645AF2
Sigma SA-mount
Microphone
Mono
None
Stereo
Sensor | Resolution
51 MP (8256 x 6192)
45 MP (6200 x 4152)
40 MP (7264 x 5440)
Sensor | Type
CMOS
CMOS (Foveon X3)
CCD
Speakers
Stereo
None
None

Dimensions

Size | Depth
123 mm / 4.84 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
1550 g / 54.77 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
1,037,000 dots
1,620,000 dots
921,000 dots
Viewfinder | Coverage
98%
100%
98%
Viewfinder | Magnification
0.62x
1.09x
0.85x
Viewfinder | Resolution
2,360,000 dots
Viewfinder | Type
Optical (pentaprism)
Electronic
Optical (pentaprism)

Function

AE Bracketing
±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV, 1 EV, 2 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
27 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
Optional via O-GPS1
No
No
ISO Range
to, ISO 100 ~ 204800
100 ~ 6400
200, 400, 800, 1600 (100 with boost)
Image Stabilization
No
No
No
Intervalometer
Yes
Yes
Processor
PRIME III
Dual TRUE III
Prime II
Touch Screen
No
No
No
Video Codecs
MPEG-4, H.264
Weather Resistance
Yes
Yes
Yes

Performance

Battery Life
650 shots
Max Burst Rate
3.0 fps
3.8 fps
1.1 fps
Storage
Dual SD/SDHC/SDXC slots
SD/SDHC/SDXC
SD/SDHC

Production

Battery
D-LI90 lithium-ion battery and charger
BP-61 lithium-ion battery & charger
Lithium-Ion D-LI90 rechargeable battery & charger
Debut
2014-04-15
2016-02-23
2010-03-10

Reviews

Neofiliac score
62%
49%
57%
Pros
  • Long battery life
  • Medium format look
  • Exceptionally high 51 MP resolution
  • 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 3.0 fps burst rate
  • Very large in size
  • Very heavy
  • Viewfinder coverage is cropped at 98%
  • Viewfinder with low 0.62x 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%

Price

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