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Canon 1D X vs Pentax 645D

Portability
50
Imaging
64
Features
73
Overall
67
Canon EOS-1D X front
 
Pentax 645D front
Portability
50
Imaging
75
Features
52
Overall
65

Canon 1D X vs Pentax 645D Key Specs

Canon 1D X
(Full Review)
  • 18MP - Full frame Sensor
  • 3.2" Fixed Screen
  • ISO 100 - 51200 (Push to 204800)
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Canon EF Mount
  • 1340g - 158 x 164 x 83mm
  • Introduced October 2011
  • Succeeded the Canon 1Ds MIII
  • New Model is 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
  • Refreshed by Pentax 645Z
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Canon 1D X vs Pentax 645D Overview

Following is a extensive analysis of the Canon 1D X and Pentax 645D, both Pro DSLR cameras by rivals Canon and Pentax. There exists a crucial gap among the resolutions of the 1D X (18MP) and 645D (40MP) and the 1D X (Full frame) and 645D (Medium format) posses different sensor dimensions.

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The 1D X was introduced 20 months after the 645D which makes them a generation away from one another. Both cameras have the same body design (Large SLR).

Before diving straight to a full comparison, here is a brief introduction of how the 1D X grades against the 645D with regards to portability, imaging, features and an overall score.

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

 1D X 645D 
IntroducedOctober 2011March 2010More modern by 20 months
Screen dimensions3.2"3"Bigger screen (+0.2")
Screen resolution1040k921kClearer screen (+119k dot)

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

 645D 1D X 

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

 1D X 645D 
Focus manually Dial precise focus
Screen typeFixed Fixed Fixed screen
Selfie screen Neither provides selfie screen
Touch friendly screen Neither provides Touch friendly screen

Canon 1D X vs Pentax 645D Physical Comparison

For those who are aiming to carry around your camera frequently, you'll have to think about its weight and dimensions. The Canon 1D X provides exterior dimensions of 158mm x 164mm x 83mm (6.2" x 6.5" x 3.3") with a weight of 1340 grams (2.95 lbs) whilst the Pentax 645D has dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs).

See the Canon 1D X and Pentax 645D in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you have attached during that time. Underneath is a front view scale comparison of the 1D X compared to the 645D.

Canon 1D X vs Pentax 645D size comparison

Looking at dimensions and weight, the portability score of the 1D X and 645D is 50 and 50 respectively.

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

Canon 1D X vs Pentax 645D Sensor Comparison

Typically, it's hard to picture the gap in sensor sizes purely by viewing a spec sheet. The picture here will help give you a clearer sense of the sensor sizes in the 1D X and 645D.

Clearly, both of those cameras have different megapixels and different sensor sizes. The 1D X having a smaller sensor is going to make shooting shallower DOF more challenging and the Pentax 645D will render greater detail using its extra 22MP. Higher resolution will help you crop shots a bit more aggressively. The younger 1D X should have an advantage in sensor technology.

Canon 1D X vs Pentax 645D sensor size comparison

Canon 1D X vs Pentax 645D Screen and ViewFinder

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

Portrait Comparison

Canon 1D X as a Portrait photography camera
Pentax 645D as a Portrait photography camera
78
focusing manually
good resolution (18 megapixels)
sensor size is big (Full frame)
features face detect focusing
saves RAW files
77
has manual focus
amazing megapixels (40MP)
great sensor size (Medium format)
delivers RAW files
doesn't have liveview
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Street Comparison

Canon 1D X Street photography information
Pentax 645D Street photography information
58
sensor size is big (Full frame)
saves RAW files
environment proofing
good high ISO (51,200)
no moving screen
no image stabilization
58
great sensor size (Medium format)
delivers RAW files
environment proof
fixed screen
no image stabilization
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Sports Comparison

Canon 1D X Sports photography details
Pentax 645D Sports photography details
69
max shutter speed is good (1/8,000s)
good resolution (18MP)
sensor size is big (Full frame)
features tracking focus
environment proofing
has phase detect AF
no image stabilization
bad battery (1,120 shots)
62
amazing megapixels (40MP)
great sensor size (Medium format)
environment proof
has phase detect AF
doesn't have liveview
max fps low (1.0 frames/s)
no image stabilization
bad battery life (800 shots)
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Travel Comparison

Canon 1D X Travel photography highlights
Pentax 645D Travel photography highlights
48
environment proofing
good resolution (18MP)
missing Time Lapse recording
bad battery (1,120 shots)
display isn't selfie friendly
55
environment proof
amazing megapixels (40 megapixels)
bad battery life (800 shots)
screen isn't selfie friendly
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Landscape Comparison

Canon 1D X Landscape photography information
Pentax 645D Landscape photography information
68
focusing manually
switch lenses (Canon EF mount)
pretty good screen size (3.2 inches)
good resolution (18 megapixels)
sensor size is big (Full frame)
good high ISO (51,200)
saves RAW files
environment proofing
has dual storage slots
no image stabilization
bad battery (1,120 CIPA)
missing Time Lapse recording
72
has manual focus
change lenses (Pentax 645AF2 mount)
screen is a decent size (3")
amazing megapixels (40MP)
great sensor size (Medium format)
does not have anti-alias filter
delivers RAW files
environment proof
two card slots
doesn't have liveview
no image stabilization
bad battery life (800 per charge)
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Vlogging Comparison

Canon 1D X Vlogging factors
Pentax 645D Vlogging factors
28
features face detect focusing
good video quality (1920 x 1080 pixels)
has mic jack
display isn't selfie friendly
no image stabilization
9
can't record video
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Canon 1D X vs Pentax 645D Specifications

Detailed spec comparison table for Canon 1D X and Pentax 645D
 Canon EOS-1D XPentax 645D
General Information
Brand Name Canon Pentax
Model Canon EOS-1D X Pentax 645D
Type Pro DSLR Pro DSLR
Introduced 2011-10-18 2010-03-10
Physical type Large SLR Large SLR
Sensor Information
Chip Dual Digic 5+ Prime II
Sensor type CMOS CCD
Sensor size Full frame Medium format
Sensor measurements 36 x 24mm 44 x 33mm
Sensor area 864.0mm² 1,452.0mm²
Sensor resolution 18MP 40MP
Anti aliasing filter
Aspect ratio 3:2 4:3
Peak resolution 5184 x 3456 7264 x 5440
Highest native ISO 51200 1600
Highest enhanced ISO 204800 -
Min native ISO 100 200
RAW pictures
Min enhanced ISO 50 100
Autofocusing
Manual focus
Touch to focus
Continuous autofocus
Autofocus single
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Autofocus multi area
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 61 11
Cross focus points 41 -
Lens
Lens mounting type Canon EF Pentax 645AF2
Amount of lenses 250 6
Focal length multiplier 1 0.8
Screen
Screen type Fixed Type Fixed Type
Screen diagonal 3.2" 3"
Screen resolution 1,040 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch operation
Screen tech Clear View II TFT LCD TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 98%
Viewfinder magnification 0.76x 0.85x
Features
Minimum shutter speed 30s 30s
Fastest shutter speed 1/8000s 1/4000s
Continuous shutter rate 14.0 frames per second 1.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash range no built-in flash no built-in flash
Flash settings E-TTL II Auto Flash, Metered Manual Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
External flash
AEB
White balance bracketing
Fastest flash synchronize 1/250s 1/125s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (30, 25, 24 fps, 1280 x 720 (60, 50 fps), 640 x 480 (60, 50 fps) -
Highest video resolution 1920x1080 None
Video format MPEG-4, H.264 -
Microphone port
Headphone port
Connectivity
Wireless Optional None
Bluetooth
NFC
HDMI
USB none USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1340 grams (2.95 lb) 1480 grams (3.26 lb)
Physical dimensions 158 x 164 x 83mm (6.2" x 6.5" x 3.3") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO Overall score 82 82
DXO Color Depth score 23.8 24.6
DXO Dynamic range score 11.8 12.6
DXO Low light score 2786 1262
Other
Battery life 1120 photographs 800 photographs
Battery type Battery Pack Battery Pack
Battery model LP-E4N D-LI90
Self timer Yes (2 or 10 sec, remote) Yes (2 or 10 sec)
Time lapse recording
Type of storage Compact Flash (Type I or II), UDMA compatible SD/SDHC
Card slots 2 2
Launch price $5,299 $4,000