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Canon 1D X III vs Pentax 645D

Portability
50
Imaging
74
Features
85
Overall
78
Canon EOS-1D X Mark III front
 
Pentax 645D front
Portability
50
Imaging
76
Features
52
Overall
66

Canon 1D X III vs Pentax 645D Key Specs

Canon 1D X III
(Full Review)
  • 20MP - Full frame Sensor
  • 3.2" Fixed Display
  • ISO 100 - 102400 (Increase to 819200)
  • 1/8000s Maximum Shutter
  • 5472 x 2886 video
  • Canon EF Mount
  • 1440g - 158 x 168 x 83mm
  • Released January 2020
  • Superseded the Canon 1D X II
Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Screen
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Introduced March 2010
  • Successor is Pentax 645Z
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Canon 1D X III vs Pentax 645D Overview

Here, we will be looking at the Canon 1D X III and Pentax 645D, both Pro DSLR digital cameras by rivals Canon and Pentax. There exists a large gap between the sensor resolutions of the 1D X III (20MP) and 645D (40MP) and the 1D X III (Full frame) and 645D (Medium format) posses different sensor size.

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The 1D X III was brought out 9 years later than the 645D and that is quite a serious difference as far as technology is concerned. The two cameras feature the same body design (Large SLR).

Before we go right into a thorough comparison, here is a quick summary of how the 1D X III matches up versus the 645D for portability, imaging, features and an overall grade.

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Reasons to pick Canon 1D X III over the Pentax 645D

 1D X III 645D 
IntroducedJanuary 2020March 2010More recent by 120 months
Screen size3.2"3"Bigger screen (+0.2")
Screen resolution2100k921kClearer screen (+1179k dot)
Touch screen Quickly navigate

Reasons to pick Pentax 645D over the Canon 1D X III

 645D 1D X III 

Common features in the Canon 1D X III and Pentax 645D

 1D X III 645D 
Focus manually Dial exact focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Missing selfie screen

Canon 1D X III vs Pentax 645D Physical Comparison

For anyone who is intending to lug around your camera, you should factor its weight and volume. The Canon 1D X III offers physical measurements of 158mm x 168mm x 83mm (6.2" x 6.6" x 3.3") accompanied by a weight of 1440 grams (3.17 lbs) whilst the Pentax 645D has sizing of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs).

Contrast the Canon 1D X III and Pentax 645D in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will differ depending on the lens you select at the time. The following is a front view dimensions comparison of the 1D X III versus the 645D.

Canon 1D X III vs Pentax 645D size comparison

Using dimensions and weight, the portability grade of the 1D X III and 645D is 50 and 50 respectively.

Canon 1D X III vs Pentax 645D top view buttons comparison

Canon 1D X III vs Pentax 645D Sensor Comparison

Quite often, its hard to imagine the contrast between sensor measurements simply by going over specifications. The visual here should offer you a much better sense of the sensor measurements in the 1D X III and 645D.

To sum up, both the cameras feature different megapixel count and different sensor measurements. The 1D X III due to its tinier sensor is going to make getting shallow depth of field more difficult and the Pentax 645D will offer you greater detail having its extra 20 Megapixels. Higher resolution can also allow you to crop photographs way more aggressively. The more modern 1D X III should have an edge with regard to sensor innovation.

Canon 1D X III vs Pentax 645D sensor size comparison

Canon 1D X III vs Pentax 645D Screen and ViewFinder

Canon 1D X III vs Pentax 645D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Canon 1D X III as a Portrait photography camera
Pentax 645D as a Portrait photography camera
84
focusing manually
good resolution (20MP)
sensor size is large (Full frame)
has face detect focus
delivers RAW files
77
has manual focus
great MP (40 megapixels)
sensor size is large (Medium format)
saves RAW formats
doesn't have liveview
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Street Comparison

Canon 1D X III Street photography advice
Pentax 645D Street photography advice
62
sensor size is large (Full frame)
delivers RAW files
comes with focus by touch
weather proofing
above average high ISO (102,400)
fixed screen
lack of image stabilization
58
sensor size is large (Medium format)
saves RAW formats
environment proof
fixed screen
lack of image stabilization
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Sports Comparison

Canon 1D X III Sports photography factors
Pentax 645D Sports photography factors
81
max shutter speed is good (1/8,000s)
high fps (20.0 fps)
good resolution (20 megapixels)
sensor size is large (Full frame)
has tracking focus
weather proofing
good battery life (2,850 per charge)
comes with phase detect auto focus
lack of image stabilization
63
great MP (40 megapixels)
sensor size is large (Medium format)
environment proof
has phase detect auto focus
doesn't have liveview
max fps low (1.0 frames per second)
lack of image stabilization
not so great battery (800 shots)
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Travel Comparison

Canon 1D X III as a Travel photography camera
Pentax 645D as a Travel photography camera
66
good battery life (2,850 per charge)
weather proofing
comes with focus by touch
good resolution (20MP)
does not have a selfie friendly display
55
environment proof
great MP (40MP)
not so great battery (800 shots)
doesn't contain selfie friendly display
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Landscape Comparison

Canon 1D X III as a Landscape photography camera
Pentax 645D as a Landscape photography camera
80
focusing manually
interchangeable lenses (Canon EF mount)
nice screen size (3.2")
good resolution (20MP)
sensor size is large (Full frame)
above average high ISO (102,400)
delivers RAW files
weather proofing
good battery life (2,850 CIPA)
two card slots
lack of image stabilization
72
has manual focus
interchangeable lenses (Pentax 645AF2 mount)
nice screen size (3 inches)
great MP (40 megapixels)
sensor size is large (Medium format)
doesnt have low pass filter
saves RAW formats
environment proof
has dual storage slots
doesn't have liveview
lack of image stabilization
not so great battery (800 shots)
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Vlogging Comparison

Canon 1D X III Vlogging details
Pentax 645D Vlogging details
30
screen is touchscreen
has face detect focus
high quality video (5472 x 2886 resolution)
does have mic socket
does not have a selfie friendly display
lack of image stabilization
9
can't record video
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Canon 1D X III vs Pentax 645D Specifications

Detailed spec comparison table for Canon 1D X III and Pentax 645D
 Canon EOS-1D X Mark IIIPentax 645D
General Information
Brand Canon Pentax
Model type Canon EOS-1D X Mark III Pentax 645D
Type Pro DSLR Pro DSLR
Released 2020-01-07 2010-03-10
Body design Large SLR Large SLR
Sensor Information
Chip Digic X Prime II
Sensor type CMOS CCD
Sensor size Full frame Medium format
Sensor dimensions 36 x 24mm 44 x 33mm
Sensor surface area 864.0mm² 1,452.0mm²
Sensor resolution 20MP 40MP
Anti alias filter
Aspect ratio 3:2 4:3
Highest resolution 5472 x 3648 7264 x 5440
Highest native ISO 102400 1600
Highest boosted ISO 819200 -
Min native ISO 100 200
RAW pictures
Min boosted ISO 50 100
Autofocusing
Manual focusing
Autofocus touch
Autofocus continuous
Autofocus single
Autofocus tracking
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 191 11
Cross type focus points 155 -
Lens
Lens mount type Canon EF Pentax 645AF2
Amount of lenses 250 6
Focal length multiplier 1 0.8
Screen
Display type Fixed Type Fixed Type
Display size 3.2" 3"
Resolution of display 2,100k dot 921k dot
Selfie friendly
Liveview
Touch operation
Display technology - TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification 0.76x 0.85x
Features
Slowest shutter speed 30 seconds 30 seconds
Maximum shutter speed 1/8000 seconds 1/4000 seconds
Continuous shooting speed 20.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Built-in flash
Flash distance no built-in flash no built-in flash
Flash settings no built-in flash Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
External flash
Auto exposure bracketing
White balance bracketing
Maximum flash sync - 1/125 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 5472 X 2886 (60p, 30p, 25p, 24p, 23.98p), 1920 x 1080 (120p, 60p, 50p, 25p, 24p, 23.98p) -
Highest video resolution 5472x2886 None
Video file format MPEG-4, H.264, H.265 -
Mic input
Headphone input
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Built-in None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1440 grams (3.17 lb) 1480 grams (3.26 lb)
Physical dimensions 158 x 168 x 83mm (6.2" x 6.6" x 3.3") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO All around rating not tested 82
DXO Color Depth rating not tested 24.6
DXO Dynamic range rating not tested 12.6
DXO Low light rating not tested 1262
Other
Battery life 2850 photos 800 photos
Style of battery Built-in Battery Pack
Battery ID - D-LI90
Self timer Yes Yes (2 or 10 sec)
Time lapse shooting
Storage media Dual CFexpress type B SD/SDHC
Storage slots 2 2
Retail pricing $6,499 $4,000