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Canon 5D MIII vs Pentax K20D

Portability
55
Imaging
68
Features
74
Overall
70
Canon EOS 5D Mark III front
 
Pentax K20D front
Portability
59
Imaging
54
Features
52
Overall
53

Canon 5D MIII vs Pentax K20D Key Specs

Canon 5D MIII
(Full Review)
  • 22MP - Full frame Sensor
  • 3.2" Fixed Display
  • ISO 100 - 25600 (Raise to 102400)
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Canon EF Mount
  • 950g - 152 x 116 x 76mm
  • Released May 2012
  • Replaced the Canon 5D MII
  • Replacement is Canon 5D MIV
Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 3200 (Raise to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Launched June 2008
  • Previous Model is Pentax K10D
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Canon 5D MIII vs Pentax K20D Overview

Let's take a deeper look at the Canon 5D MIII vs Pentax K20D, both Advanced DSLR cameras by rivals Canon and Pentax. There exists a sizable gap among the resolutions of the 5D MIII (22MP) and K20D (15MP) and the 5D MIII (Full frame) and K20D (APS-C) enjoy totally different sensor sizes.

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The 5D MIII was introduced 3 years after the K20D which is a fairly significant difference as far as camera technology is concerned. Each of the cameras offer the identical body type (Mid-size SLR).

Before delving through a full comparison, below is a quick synopsis of how the 5D MIII matches up vs the K20D in the way of portability, imaging, features and an overall mark.

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Reasons to pick Canon 5D MIII over the Pentax K20D

 5D MIII K20D 
LaunchedMay 2012June 2008Newer by 48 months
Display sizing3.2"2.7"Larger display (+0.5")
Display resolution1040k230kSharper display (+810k dot)

Reasons to pick Pentax K20D over the Canon 5D MIII

 K20D 5D MIII 

Common features in the Canon 5D MIII and Pentax K20D

 5D MIII K20D 
Manually focus Dial accurate focus
Display typeFixed Fixed Fixed display
Selfie screen Lack of selfie screen
Touch friendly display Neither provides Touch friendly display

Canon 5D MIII vs Pentax K20D Physical Comparison

When you are aiming to travel with your camera often, you should factor its weight and measurements. The Canon 5D MIII provides physical measurements of 152mm x 116mm x 76mm (6.0" x 4.6" x 3.0") with a weight of 950 grams (2.09 lbs) and the Pentax K20D has proportions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs).

Check the Canon 5D MIII vs Pentax K20D in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will differ depending on the lens you are working with at the time. Below is the front view physical size comparison of the 5D MIII against the K20D.

Canon 5D MIII vs Pentax K20D size comparison

Using dimensions and weight, the portability rating of the 5D MIII and K20D is 55 and 59 respectively.

Canon 5D MIII vs Pentax K20D top view buttons comparison

Canon 5D MIII vs Pentax K20D Sensor Comparison

Typically, it can be hard to see the difference in sensor dimensions purely by checking out specs. The pic underneath may provide you a clearer sense of the sensor sizing in the 5D MIII and K20D.

All in all, both of these cameras enjoy different megapixels and different sensor dimensions. The 5D MIII using its larger sensor will make achieving shallower depth of field less difficult and the Canon 5D MIII will provide more detail using its extra 7 Megapixels. Greater resolution can also allow you to crop images far more aggressively. The younger 5D MIII will have an advantage when it comes to sensor technology.

Canon 5D MIII vs Pentax K20D sensor size comparison

Canon 5D MIII vs Pentax K20D Screen and ViewFinder

Canon 5D MIII vs Pentax K20D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Canon 5D MIII Portrait photography details
Pentax K20D Portrait photography details
80
you can focus manually
megapixel count decent (22 megapixels)
sensor size is great (Full frame)
offers face detection autofocus
delivers RAW formats
72
focusing manually
MP count good (15 megapixels)
good sensor size (APS-C)
delivers RAW files
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Street Comparison

Canon 5D MIII Street photography details
Pentax K20D Street photography details
58
sensor size is great (Full frame)
delivers RAW formats
environment proofing
above average high ISO (25,600)
no moving screen
no image stabilization
more heavy than competition in class (950 grams)
65
built in image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
environment proofing
screen does not articulate
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Sports Comparison

Canon 5D MIII as a Sports photography camera
Pentax K20D as a Sports photography camera
71
max shutter speed is good (1/8,000s)
megapixel count decent (22 megapixels)
sensor size is great (Full frame)
offers tracking autofocus
environment proofing
comes with phase detect autofocus
slow fps (6.0 frames per second)
no image stabilization
68
built in image stabilization (Sensor based)
MP count good (15 megapixels)
good sensor size (APS-C)
environment proofing
supports phase detect autofocus
painfully slow continuous shooting (3.0 frames/s)
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Travel Comparison

Canon 5D MIII Travel photography advice
Pentax K20D Travel photography advice
51
environment proofing
megapixel count decent (22 megapixels)
does not have Timelapse recording
more heavy than competition in class (950g)
does not have a selfie friendly screen
64
environment proofing
MP count good (15 megapixels)
built-in flash
display isn't selfie friendly
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Landscape Comparison

Canon 5D MIII Landscape photography advice
Pentax K20D Landscape photography advice
73
you can focus manually
change lenses (Canon EF mount)
screen is a decent size (3.2")
megapixel count decent (22MP)
sensor size is great (Full frame)
above average high ISO (25,600)
delivers RAW formats
environment proofing
two card slots
no image stabilization
does not have Timelapse recording
71
focusing manually
interchangeable lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
MP count good (15MP)
good sensor size (APS-C)
delivers RAW files
environment proofing
tiny screen (2.7 inches)
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Vlogging Comparison

Canon 5D MIII Vlogging details
Pentax K20D Vlogging details
27
offers face detection autofocus
video res high (1920 x 1080 resolution)
does have external microphone socket
does not have a selfie friendly screen
no image stabilization
more heavy than competition in class (950g)
9
no video recording
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Canon 5D MIII vs Pentax K20D Specifications

Detailed spec comparison table for Canon 5D MIII and Pentax K20D
 Canon EOS 5D Mark IIIPentax K20D
General Information
Company Canon Pentax
Model Canon EOS 5D Mark III Pentax K20D
Class Advanced DSLR Advanced DSLR
Released 2012-05-22 2008-06-25
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Powered by Digic 5+ -
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor dimensions 36 x 24mm 23.4 x 15.6mm
Sensor surface area 864.0mm² 365.0mm²
Sensor resolution 22MP 15MP
Anti aliasing filter
Aspect ratio 3:2 3:2
Peak resolution 5760 x 3840 4672 x 3104
Highest native ISO 25600 3200
Highest enhanced ISO 102400 6400
Lowest native ISO 100 100
RAW photos
Lowest enhanced ISO 50 -
Autofocusing
Focus manually
AF touch
AF continuous
AF single
AF tracking
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 61 11
Cross focus points 41 -
Lens
Lens mounting type Canon EF Pentax KAF2
Number of lenses 250 151
Focal length multiplier 1 1.5
Screen
Type of display Fixed Type Fixed Type
Display sizing 3.2 inches 2.7 inches
Resolution of display 1,040k dots 230k dots
Selfie friendly
Liveview
Touch screen
Display technology Clear View II TFT LCD -
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 95 percent
Viewfinder magnification 0.71x 0.64x
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/4000 seconds
Continuous shutter rate 6.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash range no built-in flash 13.00 m (at ISO 100)
Flash settings no built-in flash Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless
Hot shoe
AEB
WB bracketing
Fastest flash synchronize 1/200 seconds 1/180 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (29.97, 25, 23.976 fps fps), 1280 x 720 (59.94, 50 fps), 640 x 480 (25, 30 fps) -
Highest video resolution 1920x1080 None
Video file format H.264 -
Mic port
Headphone port
Connectivity
Wireless Optional None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 950g (2.09 lbs) 800g (1.76 lbs)
Dimensions 152 x 116 x 76mm (6.0" x 4.6" x 3.0") 142 x 101 x 70mm (5.6" x 4.0" x 2.8")
DXO scores
DXO Overall score 81 65
DXO Color Depth score 24.0 22.9
DXO Dynamic range score 11.7 11.1
DXO Low light score 2293 639
Other
Battery life 950 photos -
Battery type Battery Pack -
Battery model LP-E6 D-LI50
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Storage type Compact Flash Type I (UDMA compatible), SD/SDHC/SDXC SD/MMC/SDHC card
Card slots 2 1
Cost at release $2,780 $700