Canon EOS 1200D vs Canon EOS R3

This is a full comparison between the cameras Canon EOS 1200D and Canon EOS R3. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Type of camera

Canon EOS 1200D is a DSLR camera while Canon EOS R3 is a Mirrorless camera. More information about their differences will come soon.

Sensors / crop factor

These cameras have different sensors. Canon EOS 1200D has a "APSC"-sensor while Canon EOS R3 has a "FF"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

** 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 1200D has a 18 MP (Megapixels) resolution while Canon EOS R3 has 24 MP. If we break down this in more detail this is the data behind the numbers:

Canon EOS R3 has a 34 % larger resolution than Canon EOS 1200D. 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 R3 has a larger ISO-range than Canon EOS 1200D. Canon EOS R3 has an ISO range that stretches from 100 to 102400 while Canon EOS 1200D has 100 to 6400.

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 R3 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 1200D
Lens compatibility chart for Canon EOS R3

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS 1200D can shoot up to 3 pictures per seconds and Canon EOS R3 can shoot up to 30 pictures per seconds.

Ability to record movies

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

In this case, both Canon EOS 1200D and Canon EOS R3 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 R3 weighs 1015 gr (equal to 2,24 lb) which is 111% heavier than Canon EOS 1200D and its 480 gr (or 1,06 lb).