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Compare Pentax K-S2 vs Pentax K-3 Mark III vs Pentax 645Z

Connectivity

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

Construction

Form Factor
DSLR camera
DSLR camera
Image Size
APS-C (23.5 x 15.6 mm)
APS-C (23 x 15.5 mm)
Medium format (645)
Lens Mount
Pentax K-mount
Pentax K-mount
PENTAX 645AF2
Microphone
Stereo
Stereo
Mono
Sensor | Resolution
20 MP (5472 x 3648)
26 MP (6192 x 4128)
51 MP (8256 x 6192)
Sensor | Type
CMOS
CMOS
CMOS
Speakers
Mono
Mono
Stereo

Dimensions

Size | Depth
73 mm / 2.87 in
74 mm / 2.91 in
123 mm / 4.84 in
Size | Height
123 mm / 4.84 in
104 mm / 4.09 in
117 mm / 4.61 in
Size | Width
91 mm / 3.58 in
135 mm / 5.31 in
156 mm / 6.14 in
Weight
678 g / 23.96 oz
820 g / 28.98 oz
1550 g / 54.77 oz

Display

Display Diagonal
3 inch
3.2 inch
3.2 inch
Display Type
Fully articulated TFT-LCD
Fixed TFT LCD
Tilting TFT LCD
Resolution
921,000 dots
1,620,000 dots
1,037,000 dots
Viewfinder | Coverage
100%
100%
98%
Viewfinder | Magnification
0.95x
1.05x
0.62x
Viewfinder | Type
Optical (pentaprism)
Optical (pentaprism)
Optical (pentaprism)

Function

AE Bracketing
±5 (3 frames at 1 EV, 2 EV steps)
±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)
Autofocus
11 focus points
101 focus points (25 cross type)
27 focus points
Crop Factor
1.5
1.5
0.6
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
Flash
Built-in
GPS
Optional O-GPS1
No
Optional via O-GPS1
ISO Range
100 ~ 51200
(100 ~ 1600000)
to, ISO 100 ~ 204800
Image Stabilization
5.5 stops
No
Intervalometer
Yes
Yes
Yes
Processor
PRIME MII
PRIME V
PRIME III
Touch Screen
No
Yes
No
Video Codecs
MPEG-4, H.264
MPEG-4, H.264
MPEG-4, H.264
Weather Resistance
Yes
Yes
Yes

Performance

Battery Life
410 shots
800 shots
650 shots
Flash Range
12.00 m
Max Burst Rate
5.4 fps
12.0 fps
3.0 fps
Storage
SD/SDHC/SDXC
Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Dual SD/SDHC/SDXC slots

Production

Battery
D-LI109 lithium-ion battery & charger
D-LI90
D-LI90 lithium-ion battery and charger
Debut
2015-02-09
2021-03-30
2014-04-15

Reviews

Neofiliac score
57%
69%
62%
Pros
  • Fully articulated LCD
  • Weather-sealed
  • 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
  • Long battery life
  • Medium format look
  • Exceptionally high 51 MP resolution
  • Weather-sealed
  • Affordable for a 645 DSLR
Cons
  • Menu not touch-enabled
  • Low 5.4 fps burst rate
  • Very bulky
  • Low 20 MP resolution
  • Quite heavy
  • 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

Price

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