Canon EOS M vs Canon EOS 40D

This is a full comparison between the cameras Canon EOS M and Canon EOS 40D. We compare them by looking at the categories you see below.

Canon EOS M
Canon EOS 40D

Manufacturing

These cameras are both manufacturered by Canon.

Canon EOS M were released 2012 and Canon EOS 40D was released 2007. That is a 5 years difference. In tech, this period of time can be of interest since technology is always improving etc.

Camera Manufacturer Released
Canon EOS M Canon 2012
Canon EOS 40D Canon 2007

Type of camera

Canon EOS M is a Mirrorless camera while Canon EOS 40D is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

Both these cameras have the same sorts sensor (called "APSC") which means that if you compare the cameras side by side the lenses will also have the same experienced focal length. Neither of the cameras have a Full frame sensor which means that you will get a "crop factor" where the cameras sensor size effect the focal length with a multiplier.

Camera Experienced focal length when using a lens with 50mm focal length (ex a common "50mm f/1.8")
Canon EOS M 80 mm (a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)
Canon EOS 40D 80 mm (a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)

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

Resolution

Canon EOS M has a 18 MP (Megapixels) resolution while Canon EOS 40D has 10,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels Pixel (total) Pixels (width) Pixels (height)
Canon EOS M 18 MP 17915904 5184 3456
Canon EOS 40D 10,1 MP 10077696 3888 2592

Canon EOS M has a 78 % larger resolution than Canon EOS 40D. This could give you more details in the picture but also a possibility to crop more in the pictures, afterwards while editing the pictures, if needed that is.

ISO range

Canon EOS M has a larger ISO-range than Canon EOS 40D. Canon EOS M has an ISO range that stretches from 100 to 12800 while Canon EOS 40D has 100 to 3200.

Camera ISO Range
Canon EOS M 100-12800
Canon EOS 40D 100-3200

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that supports autofocus, does not have a autofocus motor of their own but this wont cause any problems with these two cameras.

Worth mentioning is that Canon EOS M belong to the Canon EOS M-system and need an adapter to work with Canons EF, EF-S, MP-E and TS-E lenses. You can read more about this adapter here:
Read more about Canon Lens Mount Adapter EF-EOS M

Here is a complete overview of which lenses that work with each camera:
Lens compatibility chart for Canon EOS M
Lens compatibility chart for Canon EOS 40D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definately be of interest. Canon EOS M can shoot up to 4,3 pictures per seconds and Canon EOS 40D can shoot up to 6,5 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS M 4,3
Canon EOS 40D 6,5

Ability to record movies

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

When comparing these two cameras there is only one of them that can shoot movies and that is Canon EOS M. Unfortunately Canon EOS 40D does not support recording movies and movie clips.

Weight

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

Canon EOS 40D weighs 822 gr (equal to 1,81 lb) which is 176% heavier than Canon EOS M and its 298 gr (or 0,66 lb).

Camera Weight (in gram) Weight (in pounds)
Canon EOS M 298 gr 0,66 lb
Canon EOS 40D 822 gr 1,81 lb