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Compare Sigma SD1 Merrill vs Pentax 645Z vs Sigma sd Quattro H

Connectivity

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

Construction

Form Factor
DSLR camera
Mirrorless camera
Image Size
APS-C (24 x 16 mm)
Medium format (645)
APS-H (26.6 x 17.9 mm)
Lens Mount
Sigma SA-mount
PENTAX 645AF2
Sigma SA-mount
Microphone
None
Mono
None
Sensor | Resolution
45 MP (4800 x 3200)
51 MP (8256 x 6192)
45 MP (6200 x 4152)
Sensor | Type
CMOS (Foveon X3)
CMOS
CMOS (Foveon X3)
Speakers
None
Stereo
None

Dimensions

Size | Depth
80 mm / 3.15 in
123 mm / 4.84 in
91 mm / 3.58 in
Size | Height
113 mm / 4.45 in
117 mm / 4.61 in
95 mm / 3.74 in
Size | Width
146 mm / 5.75 in
156 mm / 6.14 in
147 mm / 5.79 in
Weight
1550 g / 54.77 oz

Display

Display Diagonal
3 inch
3.2 inch
3 inch
Display Type
Fixed
Tilting TFT LCD
Fixed TFT LCD
Resolution
460,000 dots
1,037,000 dots
1,620,000 dots
Viewfinder | Coverage
98%
98%
100%
Viewfinder | Magnification
0.95x
0.62x
1.09x
Viewfinder | Resolution
2,360,000 dots
Viewfinder | Type
Optical (pentaprism)
Optical (pentaprism)
Electronic

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)
Autofocus
27 focus points
9 focus points
Crop Factor
1.5
0.6
Exposure Compensation
±5 (at 1/3 EV, 1/2 EV steps)
±5 (at 1/3 EV steps)
Exposure Mode
Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
Auto / Aperture Priority / Shutter Priority / Manual
Flash
Manual Pop-up Built-in flash
GPS
No
Optional via O-GPS1
No
ISO Range
to, ISO 100 ~ 204800
100 ~ 6400
Image Stabilization
No
No
No
Intervalometer
Yes
Processor
Dual True II
PRIME III
Dual TRUE III
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
Storage
Compact Flash (Type I, UDMA compatible)
Dual SD/SDHC/SDXC slots
SD/SDHC/SDXC

Production

Battery
Lithium-Ion rechargeable battery & charger
D-LI90 lithium-ion battery and charger
BP-61 lithium-ion battery & charger
Debut
2012-02-08
2014-04-15
2016-02-23

Reviews

Neofiliac score
42%
62%
49%
Pros
  • High 45 MP resolution
  • Weather-sealed
  • Unique high-resolution Foveon sensor
  • 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
Cons
  • Viewfinder coverage is cropped at 98%
  • 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

Price

Offers (incl. referral links)
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