Canon EOS 1Ds Mark III vs Canon EOS R6 Mark II

This is a full comparison between the cameras Canon EOS 1Ds Mark III and Canon EOS R6 Mark II. We compare them by looking at the categories you see below.

Canon EOS 1Ds Mark III

Canon EOS R6 Mark II

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS 1Ds Mark III were released 2007 and Canon EOS R6 Mark II was released 2022. That is a 15 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 R6 Mark II	2022

Type of camera

Canon EOS 1Ds Mark III is a DSLR camera while Canon EOS R6 Mark II is a Mirrorless camera. More information about their differences will come soon.

Sensors / crop factor

Both these cameras have the same sorts of sensor (called "Canon Full Frame") which means that if you compare these cameras side by side the lenses will also have the same experienced focal length. Since both cameras have a Full frame sensor there will be no crop factor.

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 R6 Mark II	50 mm Full-frame sensor No crop factor/focal length multiplier

** 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 R6 Mark II has 24 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 R6 Mark II	24 MP 24000000 pixels 6000 x 4000

Canon EOS R6 Mark II has a 14 % larger resolution than Canon EOS 1Ds Mark III. 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 R6 Mark II has a larger ISO-range than Canon EOS 1Ds Mark III. Canon EOS R6 Mark II has an ISO range that stretches from 100 to 102400 while Canon EOS 1Ds Mark III has 50 to 3200.

Camera	ISO Range
Canon EOS 1Ds Mark III	50-3200
Canon EOS R6 Mark II	100-102400

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.

Worth mentioning is that Canon EOS R6 Mark II belongs to the Canon EOS R-system and needs an adapter to work with Canons EF, EF-S, MP-E, and TS-E lenses. You can read more about this adapter here:
Canon Lens Mount Adapter EF-EOS R

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 R6 Mark II

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 R6 Mark II can shoot up to 40 pictures per seconds.

Camera	FPS (Frames per second)
Canon EOS 1Ds Mark III	5
Canon EOS R6 Mark II	40

Ability to record movies

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

It is only one of these two cameras that support recording movies and movie clips and that is Canon EOS R6 Mark II. Sadly, the Canon EOS 1Ds Mark III does not support this.

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 107% heavier than Canon EOS R6 Mark II and its 670 gr (or 1.48 lb).

Camera	Weight
Canon EOS 1Ds Mark III	1385 gr 3.05 lb
Canon EOS R6 Mark II	670 gr 1.48 lb