Canon EOS 1Ds Mark III vs Canon EOS 50D

This is a full comparison between the cameras Canon EOS 1Ds Mark III and Canon EOS 50D. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS 1Ds Mark III were released 2007 and Canon EOS 50D was released 2008. That is a 1 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS 1Ds Mark III 2007
Canon EOS 50D 2008

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS 1Ds Mark III has a "Canon Full Frame"-sensor while Canon EOS 50D has a "Canon APS-C"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Canon EOS 1Ds Mark III 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Canon EOS 50D 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Canon)

Resolution

Canon EOS 1Ds Mark III has a 21,1 MP (Megapixels) resolution while Canon EOS 50D has 15,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS 1Ds Mark III 21,1 MP
21026304 pixels
5616 x 3744
Canon EOS 50D 15,1 MP
15054336 pixels
4752 x 3168

Canon EOS 1Ds Mark III has a 40 % larger resolution than Canon EOS 50D. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Canon EOS 50D has a larger ISO-range than Canon EOS 1Ds Mark III. Canon EOS 50D has an ISO range that stretches from 100 to 12800 while Canon EOS 1Ds Mark III has 50 to 3200.

Camera ISO Range
Canon EOS 1Ds Mark III 50-3200
Canon EOS 50D 100-12800

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS 1Ds Mark III
Lens compatibility chart for Canon EOS 50D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS 1Ds Mark III can shoot up to 5 pictures per seconds and Canon EOS 50D can shoot up to 6,3 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS 1Ds Mark III 5
Canon EOS 50D 6,3

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

Though, neither Canon EOS 1Ds Mark III or Canon EOS 50D can shoot movies so if that is a functionality that you are really looking for you should look elsewhere.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Canon EOS 1Ds Mark III weighs 1385 gr (equal to 3.05 lb) which is 68% heavier than Canon EOS 50D and its 822 gr (or 1.81 lb).

Camera Weight
Canon EOS 1Ds Mark III 1385 gr
3.05 lb
Canon EOS 50D 822 gr
1.81 lb

Canon EOS 1Ds Mark III vs Canon EOS 50D Specs

Below you will find the complete and detailed technical specs for both Canon EOS 1Ds Mark III and Canon EOS 50D, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product
Canon EOS 1Ds Mark III
Canon EOS 50D
Name Canon EOS 1Ds Mark III Canon EOS 50D
Manufacturer Canon Canon
Release Date and Price
Canon EOS 1Ds Mark III
Canon EOS 50D
Release Year 2007 2008
Release Date 2007-08-20 2008-08-26
MSRP 6999 USD 1399 USD
Buy it today
Camera Type
Canon EOS 1Ds Mark III
Canon EOS 50D
Camera Type DSLR DSLR
Sensor
Canon EOS 1Ds Mark III
Canon EOS 50D
Sensor Size Full Frame (approx 36 x 24 mm) APS-C (approx 22.3 x 14.9 mm)
Sensor Type CMOS CMOS
Resolution 5616 x 3744 pixels 4752 x 3168 pixels
Megapixels 21,1 MP 15,1 MP
Image Processor DUAL DIGIC 3 DIGIC 4
Image
Canon EOS 1Ds Mark III
Canon EOS 50D
ISO Range 50 - 3200 100 - 12800
White Balance Presets 8 6
Custom White Balance Yes Yes
Image Stabilization No No
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Canon EOS 1Ds Mark III
Canon EOS 50D
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Face Detection
LiveView
Focus Points 45 9
Lens Mount Canon EF

See Compatible Lenses
Canon EF
Canon EF-S

See Compatible Lenses
Focal Length Multiplier Full frame
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
APS-C Sensor
1.6x multiplier
Example:
24 mm becomes 38 mm
50 mm becomes 80 mm
100 mm becomes 160 mm
200 mm becomes 320 mm
Screen & Viewfinder
Canon EOS 1Ds Mark III
Canon EOS 50D
Articulated LCD Fixed Fixed
Screen size 3” 3”
Screen dots 230000 920000
Touch screen No No
Screen type N/A TFT liquid-crystal color LCD
Live view Yes Yes
Viewfinder Type Optical (pentaprism) Optical (pentaprism)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 0.76× 0.95× (0.59× 35mm equiv.)
Viewfinder Resolution N/A N/A
Photography features
Canon EOS 1Ds Mark III
Canon EOS 50D
Frames per second 5 fps 6,3 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/8000 seconds
Built-in Flash No Yes
Built-in Flash Range N/A 13 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Spot
Partial
Multi
Center Weighted
Spot
Exposure Compensation +/- 3 (at 1/3 EV, 1/2 EV steps) +/- 2 (at 1/3 EV, 1/2 EV steps)
Videography features
Canon EOS 1Ds Mark III
Canon EOS 50D
Video recording No No
Video format N/A N/A
Video resolution N/A N/A
Built-in Microphone No No
Built-in Speakers No No
Storage
Canon EOS 1Ds Mark III
Canon EOS 50D
Memory Card Compact Flash
SD/SDHC
Compact Flash
Connectivity
Canon EOS 1Ds Mark III
Canon EOS 50D
HDMI Output No Yes
Microphone Port No No
Headphone Port No No
Wireless Yes
Optional with WFT-E2 II
No
Remote Control Yes (N3 connector) Yes (N3 connector)
GPS No No
Body & Dimensions
Canon EOS 1Ds Mark III
Canon EOS 50D
Enviromentally sealed Yes Yes
Battery Battery Pack Battery Pack
Battery Details Canon LP-E4N Battery Pack
Lithium-Ion BP-511A rechargeable battery & charger
Battery Life (CIPA) 1800 shots 800 shots
Width 150 mm 146 mm
Height 160 mm 108 mm
Depth 80 mm 74 mm
Weight 1385 gram 822 gram