Compare Pentax K-S1 vs Pentax 645D
Connectivity
Ports
HDMI + Remote Control + USB 2.0
Remote Control + USB 2.0
Construction
Form Factor
DSLR camera
Image Size
APS-C (23.5 x 15.6 mm)
Medium format (645)
Lens Mount
Pentax K-mount
Microphone
Stereo
Stereo
Sensor | Resolution
20 MP (5472 x 3648)
40 MP (7264 x 5440)
Sensor | Type
CMOS
CCD
Speakers
Mono
None
Dimensions
Size | Depth
70 mm / 2.76 in
119 mm / 4.69 in
Size | Height
93 mm / 3.66 in
117 mm / 4.61 in
Size | Width
121 mm / 4.76 in
156 mm / 6.14 in
Weight
558 g / 19.72 oz
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
921,000 dots
921,000 dots
Viewfinder | Coverage
100%
98%
Viewfinder | Magnification
0.95x
0.85x
Viewfinder | Type
Optical (pentaprism)
Optical (pentaprism)
Function
AE Bracketing
±3 (3 frames at 1/3 EV, 1/2 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
11 focus points
Crop Factor
1.5
0.6
Exposure Compensation
±5 (at 1/3 EV, 1/2 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
Flash
Built-in
GPS
Optional O-GPS-1
No
ISO Range
100 ~ 51200
200, 400, 800, 1600 (100 with boost)
Image Stabilization
3-axis
No
Intervalometer
Yes
Processor
Prime MII
Prime II
Touch Screen
No
No
Video Codecs
H.264
Weather Resistance
No
Yes
Performance
Battery Life
410 shots
Flash Range
10.00 m
Max Burst Rate
5.4 fps
1.1 fps
Storage
SD/SDHC/SDXC
SD/SDHC
Production
Battery
D-LI109 lithium-ion battery and charger
Lithium-Ion D-LI90 rechargeable battery & charger
Debut
2014-08-27
2010-03-10
Reviews
Neofiliac score
50%
57%
Pros
- Rather compact
- Medium format look
- Weather-sealed
- Affordable for a 645 DSLR
Cons
- Menu not touch-enabled
- Low 5.4 fps burst rate
- Low 20 MP resolution
- Lacks weather sealing
- Tacky design
- 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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