Canon EOS R5 vs Canon EOS M3

This is a full comparison between the cameras Canon EOS R5 and Canon EOS M3. We compare them by looking at the categories you see below.

Canon EOS R5

Canon EOS M3

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS R5 were released 2020 and Canon EOS M3 was released 2015. That is a 5 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Canon EOS R5	2020
Canon EOS M3	2015

Type of camera

Both these cameras are Mirrorless cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS R5 has a "Canon Full Frame"-sensor while Canon EOS M3 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 R5	50 mm Full-frame sensor No crop factor/focal length multiplier
Canon EOS M3	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 R5 has a 45 MP (Megapixels) resolution while Canon EOS M3 has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Canon EOS R5	45 MP 44761088 pixels 8192 x 5464
Canon EOS M3	24 MP 24000000 pixels 6000 x 4000

Canon EOS R5 has a 87 % larger resolution than Canon EOS M3. 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 R5 has a larger ISO-range than Canon EOS M3. Canon EOS R5 has an ISO range that stretches from 100 to 51200 while Canon EOS M3 has 100 to 12800.

Camera	ISO Range
Canon EOS R5	100-51200
Canon EOS M3	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.

Worth mentioning is that Canon EOS R5 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

Worth mentioning is that Canon EOS M3 belongs to the Canon EOS M-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 M

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS R5
Lens compatibility chart for Canon EOS M3

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS R5 can shoot up to 20 pictures per seconds and Canon EOS M3 can shoot up to 4,2 pictures per seconds.

Camera	FPS (Frames per second)
Canon EOS R5	20
Canon EOS M3	4,2

Ability to record movies

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

In this case, both Canon EOS R5 and Canon EOS M3 can shoot movies.

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 R5 weighs 738 gr (equal to 1.63 lb) which is 102% heavier than Canon EOS M3 and its 366 gr (or 0.81 lb).

Camera	Weight
Canon EOS R5	738 gr 1.63 lb
Canon EOS M3	366 gr 0.81 lb