Canon EOS M3 vs Canon EOS Rebel T7i

This is a full comparison between the cameras Canon EOS M3 and Canon EOS Rebel T7i. We compare them by looking at the categories you see below.

Canon EOS M3

Canon EOS Rebel T7i

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS M3 were released 2015 and Canon EOS Rebel T7i was released 2017. That is a 2 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Canon EOS M3	2015
Canon EOS Rebel T7i	2017

Type of camera

Canon EOS M3 is a Mirrorless camera while Canon EOS Rebel T7i is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

Both these cameras have the same sorts of sensor (called "Canon APS-C") which means that if you compare these cameras side by side the lenses will also have the same experienced focal length. Neither of the cameras has a Full frame sensor which means that you will get a "crop factor" where the camera's sensor size affect the focal length with a multiplier.

Camera	Focal length, 50mm f/1.8 **
Canon EOS M3	80 mm Canon APS-C sensor Crop factor/focal length multiplier by * 1.6
Canon EOS Rebel T7i	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

Both these cameras have the exact same resolution. Canon EOS M3 has a 24 MP (Megapixels) resolution while Canon EOS Rebel T7i has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Canon EOS M3	24 MP 24000000 pixels 6000 x 4000
Canon EOS Rebel T7i	24 MP 24000000 pixels 6000 x 4000

ISO range

Canon EOS Rebel T7i has a larger ISO-range than Canon EOS M3. Canon EOS Rebel T7i has an ISO range that stretches from 100 to 25600 while Canon EOS M3 has 100 to 12800.

Camera	ISO Range
Canon EOS M3	100-12800
Canon EOS Rebel T7i	100-25600

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 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 M3
Lens compatibility chart for Canon EOS Rebel T7i

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS M3 can shoot up to 4,2 pictures per seconds and Canon EOS Rebel T7i can shoot up to 6 pictures per seconds.

Camera	FPS (Frames per second)
Canon EOS M3	4,2
Canon EOS Rebel T7i	6

Ability to record movies

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

In this case, both Canon EOS M3 and Canon EOS Rebel T7i 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 Rebel T7i weighs 532 gr (equal to 1.17 lb) which is 45% heavier than Canon EOS M3 and its 366 gr (or 0.81 lb).

Camera	Weight
Canon EOS M3	366 gr 0.81 lb
Canon EOS Rebel T7i	532 gr 1.17 lb