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Compare Pentax K-1 vs Pentax 645Z vs Pentax K-3 Mark III

Connectivity

Ports
HDMI + Headphone + Microphone + Remote Control + USB 2.0
HDMI + Microphone + Remote Control + USB 3.0
HDMI + Headphone + Microphone + Remote Control + USB 3.2 Gen 1
Wireless Connectivity
802.11b/g/n
802.11b/g/n + Bluetooth

Construction

Form Factor
DSLR camera
DSLR camera
Image Size
Full frame (35.9 x 24 mm)
Medium format (645)
APS-C (23 x 15.5 mm)
Lens Mount
Pentax K-mount
PENTAX 645AF2
Pentax K-mount
Microphone
Stereo
Mono
Stereo
Sensor | Resolution
36 MP (7360 x 4912)
51 MP (8256 x 6192)
26 MP (6192 x 4128)
Sensor | Type
CMOS
CMOS
CMOS
Speakers
Mono
Stereo
Mono

Dimensions

Size | Depth
86 mm / 3.39 in
123 mm / 4.84 in
74 mm / 2.91 in
Size | Height
110 mm / 4.33 in
117 mm / 4.61 in
104 mm / 4.09 in
Size | Width
137 mm / 5.39 in
156 mm / 6.14 in
135 mm / 5.31 in
Weight
1010 g / 35.69 oz
1550 g / 54.77 oz
820 g / 28.98 oz

Display

Display Diagonal
3.2 inch
3.2 inch
3.2 inch
Display Type
Tilting TFT LCD
Tilting TFT LCD
Fixed TFT LCD
Resolution
1,037,000 dots
1,037,000 dots
1,620,000 dots
Viewfinder | Coverage
100%
98%
100%
Viewfinder | Magnification
0.7x
0.62x
1.05x
Viewfinder | Type
Optical (pentaprism)
Optical (pentaprism)
Optical (pentaprism)

Function

AE Bracketing
±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV steps)
±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
33 focus points
27 focus points
101 focus points (25 cross type)
Crop Factor
1.0
0.6
1.5
Exposure Compensation
±5 (at 1/3 EV, 1/2 EV steps)
±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
Auto / Aperture Priority / Shutter Priority / Manual
GPS
Yes
Optional via O-GPS1
No
ISO Range
100 ~ 204800
to, ISO 100 ~ 204800
(100 ~ 1600000)
Image Stabilization
No
5.5 stops
Intervalometer
Yes
Yes
Yes
Processor
PRIME IV
PRIME III
PRIME V
Touch Screen
No
No
Yes
Video Codecs
MPEG-4, H.264
MPEG-4, H.264
MPEG-4, H.264
Weather Resistance
Yes
Yes
Yes

Performance

Battery Life
760 shots
650 shots
800 shots
Max Burst Rate
4.4 fps
3.0 fps
12.0 fps
Storage
Dual SD/SDHC/SDXC (UHS-I)
Dual SD/SDHC/SDXC slots
Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)

Production

Battery
D-LI90 lithium-ion battery & charger
D-LI90 lithium-ion battery and charger
D-LI90
Debut
2016-02-17
2014-04-15
2021-03-30

Reviews

Neofiliac score
61%
62%
69%
Pros
  • Exceptional battery life
  • Built-in GPS functionality
  • Weather-sealed
  • 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 4.4 fps burst rate
  • Very heavy
  • Viewfinder with low 0.7x magnification
  • 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

Price

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