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Canon 1Ds MIII vs Pentax 645D

Portability
51
Imaging
64
Features
52
Overall
59
Canon EOS-1Ds Mark III front
 
Pentax 645D front
Portability
50
Imaging
75
Features
52
Overall
65

Canon 1Ds MIII vs Pentax 645D Key Specs

Canon 1Ds MIII
(Full Review)
  • 21MP - Full frame Sensor
  • 3" Fixed Screen
  • ISO 50 - 3200
  • 1/8000s Max Shutter
  • No Video
  • Canon EF Mount
  • 1385g - 150 x 160 x 80mm
  • Launched August 2008
  • Replaced the Canon 1Ds MII
  • Replacement is Canon 1D X
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
  • Released March 2010
  • Updated by Pentax 645Z
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Canon 1Ds MIII vs Pentax 645D Overview

The following is a in-depth comparison of the Canon 1Ds MIII versus Pentax 645D, both Pro DSLR digital cameras by rivals Canon and Pentax. There is a substantial difference between the image resolutions of the 1Ds MIII (21MP) and 645D (40MP) and the 1Ds MIII (Full frame) and 645D (Medium format) feature totally different sensor sizes.

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The 1Ds MIII was released 18 months earlier than the 645D which makes the cameras a generation away from each other. Both cameras offer the identical body type (Large SLR).

Before getting straight into a full comparison, below is a brief summation of how the 1Ds MIII matches up vs the 645D with regards to portability, imaging, features and an overall mark.

Photography Glossary
	
	

Reasons to pick Canon 1Ds MIII over the Pentax 645D

 1Ds MIII 645D 

Reasons to pick Pentax 645D over the Canon 1Ds MIII

 645D 1Ds MIII 
ReleasedMarch 2010August 2008Newer by 18 months
Screen resolution921k230kClearer screen (+691k dot)

Common features in the Canon 1Ds MIII and Pentax 645D

 1Ds MIII 645D 
Focus manually Dial precise focusing
Screen typeFixed Fixed Fixed screen
Screen sizing3"3"Equivalent screen dimensions
Selfie screen No selfie screen
Touch friendly screen Neither comes with Touch friendly screen

Canon 1Ds MIII vs Pentax 645D Physical Comparison

For those who are looking to travel with your camera, you will have to factor its weight and dimensions. The Canon 1Ds MIII comes with external dimensions of 150mm x 160mm x 80mm (5.9" x 6.3" x 3.1") accompanied by a weight of 1385 grams (3.05 lbs) while the Pentax 645D has dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

See the Canon 1Ds MIII versus Pentax 645D in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will vary depending on the lens you select at that time. Underneath is the front view measurements comparison of the 1Ds MIII versus the 645D.

Canon 1Ds MIII vs Pentax 645D size comparison

Using size and weight, the portability score of the 1Ds MIII and 645D is 51 and 50 respectively.

Canon 1Ds MIII vs Pentax 645D top view buttons comparison

Canon 1Ds MIII vs Pentax 645D Sensor Comparison

Usually, it is hard to visualise the gap between sensor dimensions only by checking specs. The image here may offer you a better sense of the sensor dimensions in the 1Ds MIII and 645D.

All in all, both cameras offer different resolutions and different sensor dimensions. The 1Ds MIII due to its tinier sensor will make getting shallow depth of field more difficult and the Pentax 645D will give greater detail as a result of its extra 19 Megapixels. Higher resolution will make it easier to crop shots a little more aggressively. The more aged 1Ds MIII is going to be behind when it comes to sensor tech.

Canon 1Ds MIII vs Pentax 645D sensor size comparison

Canon 1Ds MIII vs Pentax 645D Screen and ViewFinder

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

Portrait Comparison

Canon 1Ds MIII as a Portrait photography camera
Pentax 645D as a Portrait photography camera
78
focusing manually
good megapixels (21 megapixels)
sensor size is big (Full frame)
supports RAW files
77
you can focus manually
sensor resolution is great (40 megapixels)
sensor size is large (Medium format)
saves RAW formats
no liveview feature
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Street Comparison

Street photography with Canon 1Ds MIII
Street photography with Pentax 645D
56
sensor size is big (Full frame)
supports RAW files
weather sealing
fixed screen
lack of image stabilization
58
sensor size is large (Medium format)
saves RAW formats
environment proof
screen does not articulate
lack of image stabilization
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Sports Comparison

Canon 1Ds MIII Sports photography details
Pentax 645D Sports photography details
63
maximum shutter speed is high (1/8,000s)
good megapixels (21 megapixels)
sensor size is big (Full frame)
weather sealing
comes with phase detect autofocus
low fps (5.0 frames/s)
lack of image stabilization
terrible battery pack (1,800 CIPA)
62
sensor resolution is great (40MP)
sensor size is large (Medium format)
environment proof
sensor has phase detect autofocus
no liveview feature
max frames per second very slow (1.0 frames/s)
lack of image stabilization
not so great battery (800 per charge)
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Travel Comparison

Canon 1Ds MIII Travel photography highlights
Pentax 645D Travel photography highlights
53
weather sealing
good megapixels (21 megapixels)
terrible battery pack (1,800 shots)
does not posses selfie friendly display
55
environment proof
sensor resolution is great (40 megapixels)
not so great battery (800 per charge)
doesn't have selfie friendly screen
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Landscape Comparison

Canon 1Ds MIII Landscape photography factors
Pentax 645D Landscape photography factors
70
focusing manually
switch lenses (Canon EF mount)
pretty good screen size (3")
good megapixels (21MP)
sensor size is big (Full frame)
supports RAW files
weather sealing
2 card slots
lack of image stabilization
terrible battery pack (1,800 per charge)
72
you can focus manually
swap lenses (Pentax 645AF2 mount)
nice screen size (3 inches)
sensor resolution is great (40 megapixels)
sensor size is large (Medium format)
no anti-alias filter
saves RAW formats
environment proof
has dual storage slots
no liveview feature
lack of image stabilization
not so great battery (800 CIPA)
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Vlogging Comparison

Canon 1Ds MIII Vlogging highlights
Pentax 645D Vlogging highlights
9
no video shooting
9
no video
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Canon 1Ds MIII vs Pentax 645D Specifications

Detailed spec comparison table for Canon 1Ds MIII and Pentax 645D
 Canon EOS-1Ds Mark IIIPentax 645D
General Information
Brand Canon Pentax
Model type Canon EOS-1Ds Mark III Pentax 645D
Category Pro DSLR Pro DSLR
Launched 2008-08-18 2010-03-10
Body design Large SLR Large SLR
Sensor Information
Chip - Prime II
Sensor type CMOS CCD
Sensor size Full frame Medium format
Sensor measurements 36 x 24mm 44 x 33mm
Sensor surface area 864.0mm² 1,452.0mm²
Sensor resolution 21MP 40MP
Anti alias filter
Aspect ratio 3:2 4:3
Maximum resolution 5616 x 3744 7264 x 5440
Maximum native ISO 3200 1600
Lowest native ISO 50 200
RAW data
Lowest boosted ISO - 100
Autofocusing
Manual focusing
AF touch
AF continuous
AF single
AF tracking
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 45 11
Lens
Lens mount type Canon EF Pentax 645AF2
Amount of lenses 250 6
Focal length multiplier 1 0.8
Screen
Range of screen Fixed Type Fixed Type
Screen diagonal 3" 3"
Resolution of screen 230 thousand dot 921 thousand dot
Selfie friendly
Liveview
Touch friendly
Screen tech - TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 98%
Viewfinder magnification 0.76x 0.85x
Features
Slowest shutter speed 30 secs 30 secs
Maximum shutter speed 1/8000 secs 1/4000 secs
Continuous shooting speed 5.0 frames/s 1.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash distance no built-in flash no built-in flash
Flash options External Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
Hot shoe
AEB
WB bracketing
Maximum flash sync 1/250 secs 1/125 secs
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Maximum video resolution None None
Microphone input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1385g (3.05 pounds) 1480g (3.26 pounds)
Dimensions 150 x 160 x 80mm (5.9" x 6.3" x 3.1") 156 x 117 x 119mm (6.1" x 4.6" x 4.7")
DXO scores
DXO All around rating 80 82
DXO Color Depth rating 24.0 24.6
DXO Dynamic range rating 12.0 12.6
DXO Low light rating 1663 1262
Other
Battery life 1800 photographs 800 photographs
Form of battery Battery Pack Battery Pack
Battery ID - D-LI90
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Storage media Compact Flash (Type I or II), SD card SD/SDHC
Storage slots Two Two
Price at launch $6,652 $4,000