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Canon 5DS R vs Pentax K-3 III

Portability
55
Imaging
76
Features
73
Overall
74
Canon EOS 5DS R front
 
Pentax K-3 Mark III front
Portability
58
Imaging
71
Features
86
Overall
77

Canon 5DS R vs Pentax K-3 III Key Specs

Canon 5DS R
(Full Review)
  • 51MP - Full frame Sensor
  • 3.2" Fixed Screen
  • ISO 100 - 6400 (Raise to 12800)
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Canon EF Mount
  • 930g - 152 x 116 x 76mm
  • Announced February 2015
Pentax K-3 III
(Full Review)
  • 26MP - APS-C Sensor
  • 3.2" Fixed Screen
  • ISO 100 - 1600000
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Pentax KAF2 Mount
  • 820g - 135 x 104 x 74mm
  • Released March 2021
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Canon 5DS R vs Pentax K-3 III Overview

On this page, we will be contrasting the Canon 5DS R versus Pentax K-3 III, both Advanced DSLR digital cameras by brands Canon and Pentax. There is a noticeable difference between the image resolutions of the 5DS R (51MP) and K-3 III (26MP) and the 5DS R (Full frame) and K-3 III (APS-C) offer different sensor measurements.

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The 5DS R was released 7 years before the K-3 III which is quite a sizable difference as far as tech is concerned. Each of the cameras have the same body design (Mid-size SLR).

Before delving right into a more detailed comparison, here is a quick synopsis of how the 5DS R grades vs the K-3 III in the way of portability, imaging, features and an overall mark.

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Reasons to pick Canon 5DS R over the Pentax K-3 III

 5DS R K-3 III 

Reasons to pick Pentax K-3 III over the Canon 5DS R

 K-3 III 5DS R 
ReleasedMarch 2021February 2015Newer by 74 months
Screen resolution1620k1040kClearer screen (+580k dot)
Touch friendly screen Quickly navigate

Common features in the Canon 5DS R and Pentax K-3 III

 5DS R K-3 III 
Manually focus More accurate focusing
Screen typeFixed Fixed Fixed screen
Screen dimensions3.2"3.2"Equal screen measurements
Selfie screen Missing selfie screen

Canon 5DS R vs Pentax K-3 III Physical Comparison

When you are intending to travel with your camera often, you'll have to take into account its weight and size. The Canon 5DS R offers external measurements of 152mm x 116mm x 76mm (6.0" x 4.6" x 3.0") and a weight of 930 grams (2.05 lbs) whilst the Pentax K-3 III has specifications of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") accompanied by a weight of 820 grams (1.81 lbs).

Check the Canon 5DS R versus Pentax K-3 III in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an ILC will change dependant on the lens you are employing at the time. The following is a front view dimension comparison of the 5DS R against the K-3 III.

Canon 5DS R vs Pentax K-3 III size comparison

Taking into account size and weight, the portability score of the 5DS R and K-3 III is 55 and 58 respectively.

Canon 5DS R vs Pentax K-3 III top view buttons comparison

Canon 5DS R vs Pentax K-3 III Sensor Comparison

Usually, it is hard to visualize the gap between sensor dimensions only by looking at specs. The pic here should provide you a much better sense of the sensor sizing in the 5DS R and K-3 III.

As you can plainly see, both of these cameras provide different megapixels and different sensor dimensions. The 5DS R due to its bigger sensor is going to make getting shallow DOF less difficult and the Canon 5DS R will resolve more detail as a result of its extra 25MP. Higher resolution will help you crop pictures more aggressively. The more aged 5DS R is going to be disadvantaged when it comes to sensor innovation.

Canon 5DS R vs Pentax K-3 III sensor size comparison

Canon 5DS R vs Pentax K-3 III Screen and ViewFinder

Canon 5DS R vs Pentax K-3 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Canon 5DS R Portrait photography details
Pentax K-3 III Portrait photography details
85
you can focus manually
fantastic megapixels (51MP)
large sensor size (Full frame)
comes with face detect autofocus
saves RAW files
82
you can focus manually
sensor resolution is amazing (26 megapixels)
good sensor size (APS-C)
has face detection focusing
supports RAW files
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Street Comparison

Canon 5DS R Street photography highlights
Pentax K-3 III Street photography highlights
61
large sensor size (Full frame)
saves RAW files
environment proof
screen does not articulate
lack of image stabilization
70
built in image stabilization (Sensor based)
good sensor size (APS-C)
supports RAW files
provides touch to focus
weather sealing
great ISO range (1,600,000)
no moving screen
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Sports Comparison

Canon 5DS R Sports photography advice
Pentax K-3 III Sports photography advice
71
high shutter speed (1/8,000s)
fantastic megapixels (51MP)
large sensor size (Full frame)
comes with tracking focus
environment proof
comes with phase detect autofocus
very slow continuous shooting (5.0 frames/s)
lack of image stabilization
low battery (700 shots)
79
maximum shutter speed is high (1/8,000 seconds)
built in image stabilization (Sensor based)
sensor resolution is amazing (26MP)
good sensor size (APS-C)
has tracking autofocus
weather sealing
comes with phase detect AF
bad battery pack (800 CIPA)
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Travel Comparison

Canon 5DS R Travel photography information
Pentax K-3 III Travel photography information
57
environment proof
fantastic megapixels (51MP)
low battery (700 shots)
doesn't offer selfie friendly display
64
weather sealing
connects via bluetooth
provides touch to focus
sensor resolution is amazing (26MP)
bad battery pack (800 per charge)
screen isn't selfie friendly
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Landscape Comparison

Canon 5DS R Landscape photography info
Pentax K-3 III Landscape photography info
76
you can focus manually
switch lenses (Canon EF mount)
pretty good screen size (3.2 inch)
fantastic megapixels (51 megapixels)
large sensor size (Full frame)
doesnt have anti-alias filter
saves RAW files
environment proof
two card slots
lack of image stabilization
low battery (700 CIPA)
80
you can focus manually
swap lenses (Pentax KAF2 mount)
screen size is decent (3.2")
built in image stabilization (Sensor based)
sensor resolution is amazing (26 megapixels)
good sensor size (APS-C)
does not have low pass filter
great ISO range (1,600,000)
supports RAW files
weather sealing
2 card slots
bad battery pack (800 CIPA)
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Vlogging Comparison

Canon 5DS R as a Vlogging camera
Pentax K-3 III as a Vlogging camera
30
comes with face detect autofocus
high video quality (1920 x 1080 resolution)
does have mic socket
doesn't offer selfie friendly display
lack of image stabilization
35
touchscreen
built in image stabilization (Sensor based)
has face detection focusing
great video quality (3840 x 2160 resolution)
does have external microphone support
screen isn't selfie friendly
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Canon 5DS R vs Pentax K-3 III Specifications

Detailed spec comparison table for Canon 5DS R and Pentax K-3 III
 Canon EOS 5DS RPentax K-3 Mark III
General Information
Company Canon Pentax
Model Canon EOS 5DS R Pentax K-3 Mark III
Type Advanced DSLR Advanced DSLR
Announced 2015-02-06 2021-03-31
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Powered by Dual DIGIC 6 -
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor measurements 36 x 24mm 23 x 15.5mm
Sensor area 864.0mm² 356.5mm²
Sensor resolution 51MP 26MP
Anti aliasing filter
Aspect ratio 3:2 and 16:9 3:2
Highest Possible resolution 8688 x 5792 6192 x 4128
Maximum native ISO 6400 1600000
Maximum enhanced ISO 12800 -
Min native ISO 100 100
RAW format
Autofocusing
Manual focus
Touch to focus
Continuous autofocus
Single autofocus
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Autofocus multi area
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 61 101
Cross focus points 41 25
Lens
Lens mount Canon EF Pentax KAF2
Number of lenses 250 156
Crop factor 1 1.6
Screen
Screen type Fixed Type Fixed Type
Screen size 3.2" 3.2"
Screen resolution 1,040 thousand dots 1,620 thousand dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 100%
Viewfinder magnification 0.71x 0.7x
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/8000 seconds 1/8000 seconds
Continuous shutter rate 5.0 frames per second 12.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash range no built-in flash no built-in flash
Flash options no built-in flash Auto, Auto + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow- speed Sync, Slow-speed Sync + Red-eye, P-TTL, Contrast-control-sync, High-speed sync, Wireless sync
External flash
Auto exposure bracketing
WB bracketing
Max flash synchronize 1/200 seconds 1/200 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 1920 x 1080 (30p, 25p, 24p), 1280 x 720 (60p, 50p), 640 x 480 (30p, 25p) 3840 x 2160 @ 30p, MOV, H.264, Linear PCM3840 x 2160 @ 24p, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 24p, MOV, H.264, Linear PCM
Maximum video resolution 1920x1080 3840x2160
Video format H.264 MPEG-4, H.264
Microphone support
Headphone support
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 930 grams (2.05 pounds) 820 grams (1.81 pounds)
Physical dimensions 152 x 116 x 76mm (6.0" x 4.6" x 3.0") 135 x 104 x 74mm (5.3" x 4.1" x 2.9")
DXO scores
DXO Overall score 86 not tested
DXO Color Depth score 24.6 not tested
DXO Dynamic range score 12.4 not tested
DXO Low light score 2308 not tested
Other
Battery life 700 photos 800 photos
Battery style Battery Pack Battery Pack
Battery model LP-E6 D-LI90
Self timer Yes (2 or 10 secs) Yes
Time lapse recording
Storage type SD/SDHC/SDXC (UHS-I compatible), CompactFlash Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Card slots Two Two
Launch price $3,699 $1,999