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Canon 5DS vs Pentax K-3 III

Portability
55
Imaging
76
Features
72
Overall
74
Canon EOS 5DS front
 
Pentax K-3 Mark III front
Portability
58
Imaging
71
Features
86
Overall
77

Canon 5DS vs Pentax K-3 III Key Specs

Canon 5DS
(Full Review)
  • 51MP - Full frame Sensor
  • 3.2" Fixed Display
  • ISO 100 - 6400 (Increase to 12800)
  • 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 Display
  • 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
  • Introduced March 2021
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Canon 5DS vs Pentax K-3 III Overview

Below is a detailed review of the Canon 5DS and Pentax K-3 III, both Advanced DSLR digital cameras by competitors Canon and Pentax. There is a noticeable difference between the image resolutions of the 5DS (51MP) and K-3 III (26MP) and the 5DS (Full frame) and K-3 III (APS-C) have different sensor dimensions.

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The 5DS was announced 7 years earlier than the K-3 III and that is quite a sizable difference as far as tech is concerned. Both the cameras have the same body design (Mid-size SLR).

Before delving right into a thorough comparison, here is a brief summation of how the 5DS scores vs the K-3 III when considering portability, imaging, features and an overall grade.

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

 5DS K-3 III 

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

 K-3 III 5DS 
IntroducedMarch 2021February 2015More recent by 74 months
Display resolution1620k1040kClearer display (+580k dot)
Touch display Easily navigate

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

 5DS K-3 III 
Focus manually More exact focus
Display typeFixed Fixed Fixed display
Display dimensions3.2"3.2"Equal display sizing
Selfie screen Missing selfie screen

Canon 5DS vs Pentax K-3 III Physical Comparison

For anybody who is looking to lug around your camera, you need to factor its weight and size. The Canon 5DS has outer measurements of 152mm x 116mm x 76mm (6.0" x 4.6" x 3.0") having 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") having a weight of 820 grams (1.81 lbs).

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

Always remember, the weight of an ILC will differ based on the lens you are utilizing at the time. Here is a front view scale comparison of the 5DS and the K-3 III.

Canon 5DS vs Pentax K-3 III size comparison

Using size and weight, the portability grade of the 5DS and K-3 III is 55 and 58 respectively.

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

Canon 5DS vs Pentax K-3 III Sensor Comparison

Oftentimes, it is difficult to imagine the difference between sensor measurements just by reading technical specs. The graphic underneath should provide you a far better sense of the sensor sizing in the 5DS and K-3 III.

As you can tell, both of the cameras provide different megapixel count and different sensor measurements. The 5DS using its larger sensor is going to make getting shallow DOF simpler and the Canon 5DS will offer you more detail with its extra 25MP. Greater resolution will also enable you to crop pics more aggressively. The older 5DS is going to be behind with regard to sensor innovation.

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

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

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

Portrait Comparison

Canon 5DS Portrait photography advice
Pentax K-3 III Portrait photography advice
85
has manual focus
sensor resolution is excellent (51MP)
great sensor size (Full frame)
has face detect autofocus
exports RAW formats
82
you can focus manually
MP count fantastic (26 megapixels)
good sensor size (APS-C)
features face detect focus
exports RAW formats
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Street Comparison

Canon 5DS Street photography factors
Pentax K-3 III Street photography factors
61
great sensor size (Full frame)
exports RAW formats
environment sealing
no moving screen
lack of image stabilization
70
image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW formats
comes with touch to focus
weather sealing
above average ISO range (1,600,000)
no moving screen
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Sports Comparison

Canon 5DS as a Sports photography camera
Pentax K-3 III as a Sports photography camera
71
great max shutter speed (1/8,000 seconds)
sensor resolution is excellent (51 megapixels)
great sensor size (Full frame)
has tracking focus
environment sealing
comes with phase detect autofocus
very slow continuous shooting (5.0 fps)
lack of image stabilization
terrible battery power (700 per charge)
79
maximum shutter speed is high (1/8,000 seconds)
image stabilization (Sensor based)
MP count fantastic (26MP)
good sensor size (APS-C)
features tracking focus
weather sealing
comes with phase detect auto focus
terrible battery power (800 CIPA)
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Travel Comparison

Canon 5DS Travel photography info
Pentax K-3 III Travel photography info
57
environment sealing
sensor resolution is excellent (51 megapixels)
terrible battery power (700 per charge)
screen is not selfie friendly
64
weather sealing
supports bluetooth
comes with touch to focus
MP count fantastic (26 megapixels)
terrible battery power (800 per charge)
display is not selfie friendly
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Landscape Comparison

Landscape photography with Canon 5DS
Landscape photography with Pentax K-3 III
75
has manual focus
swap lenses (Canon EF mount)
screen size is decent (3.2 inches)
sensor resolution is excellent (51 megapixels)
great sensor size (Full frame)
exports RAW formats
environment sealing
has double storage slots
lack of image stabilization
terrible battery power (700 per charge)
80
you can focus manually
interchangeable lenses (Pentax KAF2 mount)
screen size is good (3.2 inches)
image stabilization (Sensor based)
MP count fantastic (26 megapixels)
good sensor size (APS-C)
doesnt have low pass filter
above average ISO range (1,600,000)
exports RAW formats
weather sealing
two card slots
terrible battery power (800 shots)
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Vlogging Comparison

Canon 5DS Vlogging details
Pentax K-3 III Vlogging details
30
has face detect autofocus
high quality video (1920 x 1080 resolution)
does have mic port
screen is not selfie friendly
lack of image stabilization
35
touch screen
image stabilization (Sensor based)
features face detect focus
high video quality (3840 x 2160 pxls)
does have microphone socket
display is not selfie friendly
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Canon 5DS vs Pentax K-3 III Specifications

Detailed spec comparison table for Canon 5DS and Pentax K-3 III
 Canon EOS 5DSPentax K-3 Mark III
General Information
Brand Canon Pentax
Model type Canon EOS 5DS Pentax K-3 Mark III
Category Advanced DSLR Advanced DSLR
Announced 2015-02-06 2021-03-31
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Processor Chip Dual DIGIC 6 -
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor measurements 36 x 24mm 23 x 15.5mm
Sensor surface area 864.0mm² 356.5mm²
Sensor resolution 51 megapixel 26 megapixel
Anti alias filter
Aspect ratio 3:2 and 16:9 3:2
Full resolution 8688 x 5792 6192 x 4128
Max native ISO 6400 1600000
Max boosted ISO 12800 -
Lowest native ISO 100 100
RAW photos
Autofocusing
Manual focusing
Touch to focus
Autofocus continuous
Single autofocus
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 61 101
Cross type focus points 41 25
Lens
Lens mount type Canon EF Pentax KAF2
Total lenses 250 156
Crop factor 1 1.6
Screen
Type of display Fixed Type Fixed Type
Display size 3.2" 3.2"
Resolution of display 1,040 thousand dots 1,620 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 100%
Viewfinder magnification 0.71x 0.7x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/8000s
Continuous shooting rate 5.0fps 12.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Built-in flash
Flash distance no built-in flash no built-in flash
Flash settings 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
AE bracketing
White balance bracketing
Highest flash synchronize 1/200s 1/200s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
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
Max video resolution 1920x1080 3840x2160
Video data format H.264 MPEG-4, H.264
Microphone port
Headphone port
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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 930g (2.05 pounds) 820g (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 All around rating 87 not tested
DXO Color Depth rating 24.7 not tested
DXO Dynamic range rating 12.4 not tested
DXO Low light rating 2381 not tested
Other
Battery life 700 photos 800 photos
Form of battery Battery Pack Battery Pack
Battery ID LP-E6 D-LI90
Self timer Yes (2 or 10 secs) Yes
Time lapse shooting
Storage type SD/SDHC/SDXC (UHS-I compatible), CompactFlash Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Card slots Dual Dual
Price at launch $3,699 $1,999