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Pentax K-r vs Sony A7 III

Portability
67
Imaging
52
Features
52
Overall
52
Pentax K-r front
 
Sony Alpha A7 III front
Portability
63
Imaging
72
Features
92
Overall
80

Pentax K-r vs Sony A7 III Key Specs

Pentax K-r
(Full Review)
  • 12MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 200 - 12800 (Raise to 25600)
  • Sensor based Image Stabilization
  • 1/6000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 598g - 125 x 97 x 68mm
  • Announced March 2011
Sony A7 III
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 51200 (Push to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 650g - 127 x 96 x 74mm
  • Introduced February 2018
  • Old Model is Sony A7 II
  • Newer Model is Sony A7 IV
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Pentax K-r vs Sony A7 III Overview

Let's look a little more in depth at the Pentax K-r and Sony A7 III, one is a Entry-Level DSLR and the other is a Pro Mirrorless by rivals Pentax and Sony. There exists a sizeable gap among the sensor resolutions of the K-r (12MP) and A7 III (24MP) and the K-r (APS-C) and A7 III (Full frame) possess different sensor size.

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The K-r was launched 8 years prior to the A7 III which is a fairly large gap as far as camera technology is concerned. Each of these cameras offer different body type with the Pentax K-r being a Compact SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before going through a in depth comparison, below is a short summation of how the K-r matches up vs the A7 III when considering portability, imaging, features and an overall score.

Photography Glossary

        

Reasons to pick Pentax K-r over the Sony A7 III

 K-r A7 III 

Reasons to pick Sony A7 III over the Pentax K-r

 A7 III K-r 
IntroducedFebruary 2018March 2011More modern by 84 months
Display typeTiltingFixed Tilting display
Display resolution922k921kCrisper display (+1k dot)
Touch display Easily navigate

Common features in the Pentax K-r and Sony A7 III

 K-r A7 III 
Manually focus Dial accurate focusing
Display sizing3"3"Equivalent display size
Selfie screen Neither features selfie screen

Pentax K-r vs Sony A7 III Physical Comparison

If you are planning to carry around your camera often, you're going to have to consider its weight and dimensions. The Pentax K-r enjoys external dimensions of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") having a weight of 598 grams (1.32 lbs) while the Sony A7 III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

Check the Pentax K-r and Sony A7 III in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are employing at that moment. Here is the front view measurements comparison of the K-r against the A7 III.

Pentax K-r vs Sony A7 III size comparison

Using dimensions and weight, the portability grade of the K-r and A7 III is 67 and 63 respectively.

Pentax K-r vs Sony A7 III top view buttons comparison

Pentax K-r vs Sony A7 III Sensor Comparison

Typically, its tough to visualize the difference in sensor sizes purely by looking through specifications. The image here will help give you a better sense of the sensor dimensions in the K-r and A7 III.

Plainly, both of those cameras enjoy different resolutions and different sensor sizes. The K-r due to its smaller sensor is going to make getting shallow DOF tougher and the Sony A7 III will result in greater detail utilizing its extra 12MP. Greater resolution can also help you crop pics far more aggressively. The more aged K-r will be behind in sensor technology.

Pentax K-r vs Sony A7 III sensor size comparison

Pentax K-r vs Sony A7 III Screen and ViewFinder

Pentax K-r vs Sony A7 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Pentax K-r
Portrait photography with Sony A7 III
63
you can focus manually
nice sensor size (APS-C)
supports face detect autofocus
supports RAW formats
sensor resolution not great (12MP)
83
focusing manually
decent sensor resolution (24 megapixels)
sensor size is big (Full frame)
comes with face detection focus
exports RAW files
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Street Comparison

Pentax K-r Street photography features
Sony A7 III Street photography features
66
has image stabilization (Sensor based)
nice sensor size (APS-C)
supports RAW formats
no moving screen
78
has a tilting screen
image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
exports RAW files
features touch focus
weather proofing
above average high ISO (51,200)
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Sports Comparison

Pentax K-r Sports photography details
Sony A7 III Sports photography details
54
great max shutter speed (1/6,000s)
has image stabilization (Sensor based)
nice sensor size (APS-C)
comes with phase detect autofocus
continuous shooting slow (6.0 frames per second)
sensor resolution not great (12MP)
low battery pack (470 CIPA)
86
great max shutter speed (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
decent sensor resolution (24 megapixels)
sensor size is big (Full frame)
comes with tracking autofocus
weather proofing
good battery power (610 shots)
supports phase detect auto focus
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Travel Comparison

Pentax K-r as a Travel photography camera
Sony A7 III as a Travel photography camera
47
has built in flash
low battery pack (470 per charge)
sensor resolution not great (12MP)
does not have selfie friendly screen
72
good battery power (610 per charge)
weather proofing
supports bluetooth
features touch focus
decent sensor resolution (24MP)
doesn't offer selfie friendly screen
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Landscape Comparison

Pentax K-r Landscape photography info
Sony A7 III Landscape photography info
65
you can focus manually
change lenses (Pentax KAF2 mount)
decent sized screen (3 inches)
has image stabilization (Sensor based)
nice sensor size (APS-C)
supports RAW formats
sensor resolution not great (12MP)
low battery pack (470 per charge)
85
focusing manually
change lenses (Sony E mount)
nice screen size (3 inches)
image stabilization (Sensor based 5-axis)
decent sensor resolution (24MP)
sensor size is big (Full frame)
above average high ISO (51,200)
exports RAW files
weather proofing
good battery power (610 per charge)
two card slots
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Vlogging Comparison

Vlogging with Pentax K-r
Vlogging with Sony A7 III
26
has image stabilization (Sensor based)
supports face detect autofocus
does not have selfie friendly screen
video resolution low (1280 x 720 resolution)
does not have microphone port
36
screen is touchscreen
image stabilization (Sensor based 5-axis)
comes with face detection focus
high res video (3840 x 2160 resolution)
comes with external mic socket
doesn't offer selfie friendly screen
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Pentax K-r vs Sony A7 III Specifications

Detailed spec comparison table for Pentax K-r and Sony A7 III
 Pentax K-rSony Alpha A7 III
General Information
Brand Name Pentax Sony
Model Pentax K-r Sony Alpha A7 III
Category Entry-Level DSLR Pro Mirrorless
Announced 2011-03-11 2018-02-27
Physical type Compact SLR SLR-style mirrorless
Sensor Information
Powered by Prime II Bionz X
Sensor type CMOS BSI-CMOS
Sensor size APS-C Full frame
Sensor dimensions 23.6 x 15.8mm 35.8 x 23.8mm
Sensor area 372.9mm² 852.0mm²
Sensor resolution 12MP 24MP
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Full resolution 4288 x 2848 6000 x 4000
Max native ISO 12800 51200
Max boosted ISO 25600 204800
Lowest native ISO 200 100
RAW data
Lowest boosted ISO 100 50
Autofocusing
Manual focus
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Number of focus points 11 693
Cross focus points 9 -
Lens
Lens mount Pentax KAF2 Sony E
Number of lenses 151 121
Crop factor 1.5 1
Screen
Type of screen Fixed Type Tilting
Screen size 3" 3"
Screen resolution 921k dots 922k dots
Selfie friendly
Liveview
Touch capability
Screen technology TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentamirror) Electronic
Viewfinder resolution - 2,359k dots
Viewfinder coverage 96 percent 100 percent
Viewfinder magnification 0.57x 0.78x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/6000s 1/8000s
Continuous shooting rate 6.0fps 10.0fps
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Integrated flash
Flash range 12.00 m (at ISO 100) no built-in flash
Flash settings Auto, Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, High-Speed Sync and Wireless Sync no built-in flash
Hot shoe
AEB
White balance bracketing
Highest flash synchronize 1/180s -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 1280 x 720 (25 fps), 640 x 480 (25 fps) 3840 x 2160 (30p, 24p) 1920 x 1080 (120p, 60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Max video resolution 1280x720 3840x2160
Video data format Motion JPEG MPEG-4, AVCHD, XAVC S, H.264
Mic port
Headphone port
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.1 Gen 1 (5 GBit/sec)
GPS Optional None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 598 gr (1.32 pounds) 650 gr (1.43 pounds)
Dimensions 125 x 97 x 68mm (4.9" x 3.8" x 2.7") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO All around score 72 96
DXO Color Depth score 22.9 25.0
DXO Dynamic range score 12.4 14.7
DXO Low light score 755 3730
Other
Battery life 470 photographs 610 photographs
Battery type Battery Pack Battery Pack
Battery model D-LI109,4 x AA NP-FZ100
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse feature
Storage type SD/SDHC SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots 1 Dual
Cost at launch $1,100 $1,998