Compare Pentax 645Z vs Pentax K-3 Mark III
Connectivity
Ports
HDMI + Microphone + Remote Control + USB 3.0
HDMI + Headphone + Microphone + Remote Control + USB 3.2 Gen 1
Wireless Connectivity
802.11b/g/n + Bluetooth
Construction
Form Factor
DSLR camera
Image Size
Medium format (645)
APS-C (23 x 15.5 mm)
Lens Mount
PENTAX 645AF2
Pentax K-mount
Microphone
Mono
Stereo
Sensor | Resolution
51 MP (8256 x 6192)
26 MP (6192 x 4128)
Sensor | Type
CMOS
CMOS
Speakers
Stereo
Mono
Dimensions
Size | Depth
123 mm / 4.84 in
74 mm / 2.91 in
Size | Height
117 mm / 4.61 in
104 mm / 4.09 in
Size | Width
156 mm / 6.14 in
135 mm / 5.31 in
Weight
1550 g / 54.77 oz
820 g / 28.98 oz
Display
Display Diagonal
3.2 inch
3.2 inch
Display Type
Tilting TFT LCD
Fixed TFT LCD
Resolution
1,037,000 dots
1,620,000 dots
Viewfinder | Coverage
98%
100%
Viewfinder | Magnification
0.62x
1.05x
Viewfinder | Type
Optical (pentaprism)
Optical (pentaprism)
Function
AE Bracketing
±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV, 1 EV, 2 EV steps)
±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV steps)
Autofocus
27 focus points
101 focus points (25 cross type)
Crop Factor
0.6
1.5
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
GPS
Optional via O-GPS1
No
ISO Range
to, ISO 100 ~ 204800
(100 ~ 1600000)
Image Stabilization
No
5.5 stops
Intervalometer
Yes
Yes
Processor
PRIME III
PRIME V
Touch Screen
No
Yes
Video Codecs
MPEG-4, H.264
MPEG-4, H.264
Weather Resistance
Yes
Yes
Performance
Battery Life
650 shots
800 shots
Max Burst Rate
3.0 fps
12.0 fps
Storage
Dual SD/SDHC/SDXC slots
Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Production
Battery
D-LI90 lithium-ion battery and charger
D-LI90
Debut
2014-04-15
2021-03-30
Reviews
Neofiliac score
62%
69%
Pros
- Long battery life
- Medium format look
- Exceptionally high 51 MP resolution
- Weather-sealed
- Affordable for a 645 DSLR
- Exceptional battery life
- 5.5 stops of IBIS
- Good 12.0 fps burst rate
- Weather-sealed
- Viewfinder with great 1.05x magnification
- Supports both WiFi and Bluetooth
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
- Quite heavy
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