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Pentax K-1 II vs Sony A7R III

Portability
55
Imaging
78
Features
82
Overall
79
Pentax K-1 Mark II front
 
Sony Alpha A7R III front
Portability
63
Imaging
78
Features
93
Overall
84

Pentax K-1 II vs Sony A7R III Key Specs

Pentax K-1 II
(Full Review)
  • 36MP - Full frame Sensor
  • 3.2" Fully Articulated Screen
  • ISO 100 - 819200
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF4 Mount
  • 1010g - 137 x 110 x 86mm
  • Launched February 2018
  • Replaced the Pentax K-1
Sony A7R III
(Full Review)
  • 42MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 32000 (Boost to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 657g - 127 x 96 x 74mm
  • Launched October 2017
  • Older Model is Sony A7R II
  • Updated by Sony A7R IV
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Pentax K-1 II vs Sony A7R III Overview

Its time to look closer at the Pentax K-1 II vs Sony A7R III, former being a Advanced DSLR while the other is a Pro Mirrorless by competitors Pentax and Sony. The sensor resolution of the K-1 II (36MP) and the A7R III (42MP) is fairly close and they use the exact same sensor dimensions (Full frame).

Photography Glossary

The K-1 II was revealed 4 months later than the A7R III and they are both of a similar age. Both of these cameras come with different body type with the Pentax K-1 II being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before getting through a detailed comparison, below is a brief synopsis of how the K-1 II scores vs the A7R III when it comes to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-1 II over the Sony A7R III

 K-1 II A7R III 
Display typeFully ArticulatedTiltingFully Articulating display
Display dimension3.2"3"Larger display (+0.2")

Reasons to pick Sony A7R III over the Pentax K-1 II

 A7R III K-1 II 
Display resolution1440k1037kSharper display (+403k dot)
Touch display Easily navigate

Common features in the Pentax K-1 II and Sony A7R III

 K-1 II A7R III 
LaunchedFebruary 2018October 2017Same age
Manual focus More exact focus
Selfie screen Missing selfie screen

Pentax K-1 II vs Sony A7R III Physical Comparison

If you're aiming to carry your camera regularly, you're going to have to factor in its weight and measurements. The Pentax K-1 II has got physical dimensions of 137mm x 110mm x 86mm (5.4" x 4.3" x 3.4") having a weight of 1010 grams (2.23 lbs) while the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs).

Take a look at the Pentax K-1 II vs Sony A7R III in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will vary depending on the lens you use at that moment. Here is the front view overall size comparison of the K-1 II against the A7R III.

Pentax K-1 II vs Sony A7R III size comparison

Taking into consideration size and weight, the portability rating of the K-1 II and A7R III is 55 and 63 respectively.

Pentax K-1 II vs Sony A7R III top view buttons comparison

Pentax K-1 II vs Sony A7R III Sensor Comparison

Usually, it's tough to visualize the difference in sensor sizing merely by looking through technical specs. The photograph underneath will help give you a far better sense of the sensor sizes in the K-1 II and A7R III.

As you have seen, both of those cameras have got the exact same sensor measurements but different MP. You can anticipate the Sony A7R III to result in greater detail because of its extra 6 Megapixels. Greater resolution will also make it easier to crop pics much more aggressively.

Pentax K-1 II vs Sony A7R III sensor size comparison

Pentax K-1 II vs Sony A7R III Screen and ViewFinder

Pentax K-1 II vs Sony A7R III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-1 II Portrait photography factors
Sony A7R III Portrait photography factors
86
manual focus
sensor resolution is fantastic (36MP)
sensor size is big (Full frame)
supports face detection focusing
delivers RAW files
86
you can focus manually
megapixel count excellent (42 megapixels)
sensor size is large (Full frame)
offers face detect focusing
supports RAW formats
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Street Comparison

Pentax K-1 II Street photography features
Sony A7R III Street photography features
70
screen can move to multiple angles
built in image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
delivers RAW files
environment proofing
good high ISO (819,200)
heavier than competitors in class (1,010g)
79
screen tilts up and down
has image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
supports RAW formats
provides touch to focus
weather proof
great ISO range (32,000)
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Sports Comparison

Sports photography with Pentax K-1 II
Sports photography with Sony A7R III
77
high shutter speed (1/8,000 seconds)
built in image stabilization (Sensor based 5-axis)
sensor resolution is fantastic (36MP)
sensor size is big (Full frame)
supports tracking autofocus
environment proofing
supports phase detect AF
low frames per second (4.4 fps)
terrible battery life (670 CIPA)
89
max shutter speed is good (1/8,000s)
has image stabilization (Sensor based 5-axis)
megapixel count excellent (42MP)
sensor size is large (Full frame)
offers tracking focus
weather proof
better than average battery pack (650 shots)
comes with phase detect AF
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Travel Comparison

Pentax K-1 II as a Travel photography camera
Sony A7R III as a Travel photography camera
53
environment proofing
sensor resolution is fantastic (36 megapixels)
terrible battery life (670 CIPA)
heavier than competitors in class (1,010 grams)
does not contain selfie friendly screen
74
better than average battery pack (650 per charge)
weather proof
has bluetooth
provides touch to focus
megapixel count excellent (42MP)
screen is not selfie friendly
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Landscape Comparison

Pentax K-1 II as a Landscape photography camera
Sony A7R III as a Landscape photography camera
82
manual focus
swap lenses (Pentax KAF4 mount)
screen size is decent (3.2 inch)
built in image stabilization (Sensor based 5-axis)
sensor resolution is fantastic (36MP)
sensor size is big (Full frame)
no anti-alias filter
good high ISO (819,200)
delivers RAW files
environment proofing
has dual storage slots
terrible battery life (670 per charge)
87
you can focus manually
swap lenses (Sony E mount)
decent sized screen (3")
has image stabilization (Sensor based 5-axis)
megapixel count excellent (42 megapixels)
sensor size is large (Full frame)
no anti-alias filter
great ISO range (32,000)
supports RAW formats
weather proof
better than average battery pack (650 CIPA)
2 card slots
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Vlogging Comparison

Pentax K-1 II Vlogging highlights
Sony A7R III Vlogging highlights
32
built in image stabilization (Sensor based 5-axis)
supports face detection focusing
high quality video (1920 x 1080 pxls)
comes with external mic jack
does not contain selfie friendly screen
heavier than competitors in class (1,010 grams)
37
has touchscreen
has image stabilization (Sensor based 5-axis)
offers face detect focusing
high video quality (3840 x 2160 resolution)
does have mic support
screen is not selfie friendly
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Pentax K-1 II vs Sony A7R III Specifications

Detailed spec comparison table for Pentax K-1 II and Sony A7R III
 Pentax K-1 Mark IISony Alpha A7R III
General Information
Brand Name Pentax Sony
Model type Pentax K-1 Mark II Sony Alpha A7R III
Category Advanced DSLR Pro Mirrorless
Launched 2018-02-22 2017-10-25
Physical type Mid-size SLR SLR-style mirrorless
Sensor Information
Processor PRIME IV Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Full frame Full frame
Sensor dimensions 35.9 x 24mm 35.9 x 24mm
Sensor surface area 861.6mm² 861.6mm²
Sensor resolution 36MP 42MP
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Peak resolution 7360 x 4912 7952 x 5304
Highest native ISO 819200 32000
Highest enhanced ISO - 102400
Min native ISO 100 100
RAW data
Min enhanced ISO - 50
Autofocusing
Focus manually
Touch focus
AF continuous
Single AF
Tracking AF
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 33 425
Cross type focus points 25 -
Lens
Lens mount type Pentax KAF4 Sony E
Available lenses 151 121
Crop factor 1 1
Screen
Screen type Fully Articulated Tilting
Screen sizing 3.2 inch 3 inch
Resolution of screen 1,037 thousand dots 1,440 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 3,686 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.7x 0.78x
Features
Min shutter speed 30s 30s
Max shutter speed 1/8000s 1/8000s
Continuous shutter rate 4.4 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash distance no built-in flash no built-in flash
Flash settings Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync
External flash
Auto exposure bracketing
WB bracketing
Max flash synchronize 1/200s -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Highest video resolution 1920x1080 3840x2160
Video format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Mic support
Headphone support
Connectivity
Wireless Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.1 Gen 1(5 GBit/sec)
GPS Built-in None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1010g (2.23 lbs) 657g (1.45 lbs)
Dimensions 137 x 110 x 86mm (5.4" x 4.3" x 3.4") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO Overall rating not tested 100
DXO Color Depth rating not tested 26.0
DXO Dynamic range rating not tested 14.7
DXO Low light rating not tested 3523
Other
Battery life 670 shots 650 shots
Battery style Battery Pack Battery Pack
Battery ID D-LI90 NP-FZ100
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse feature
Type of storage Dual SD/SDHC/SDXC (UHS-I) Two SD/SDHC/SDXC slots (UHS-II support on one)
Card slots Two Two
Launch pricing $1,737 $2,800