Canon EOS Rebel T3i vs Canon EOS 100D

This is a full comparison between the cameras Canon EOS Rebel T3i and Canon EOS 100D. We compare them by looking at the categories you see below.

Canon EOS Rebel T3i

Canon EOS 100D

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS Rebel T3i were released 2011 and Canon EOS 100D was released 2013. That is a 2 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Canon EOS Rebel T3i	2011
Canon EOS 100D	2013

Type of camera

Both these cameras are DSLR cameras. No difference there.

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 Rebel T3i	80 mm Canon APS-C sensor Crop factor/focal length multiplier by * 1.6
Canon EOS 100D	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 Rebel T3i has a 18 MP (Megapixels) resolution while Canon EOS 100D has 18 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Canon EOS Rebel T3i	18 MP 17915904 pixels 5184 x 3456
Canon EOS 100D	18 MP 17915904 pixels 5184 x 3456

ISO range

Both of these cameras offer the exact same ISO range. They both have 100 to 12800.

Camera	ISO Range
Canon EOS Rebel T3i	100-12800
Canon EOS 100D	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.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS Rebel T3i
Lens compatibility chart for Canon EOS 100D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS Rebel T3i can shoot up to 3,7 pictures per seconds and Canon EOS 100D can shoot up to 4 pictures per seconds.

Camera	FPS (Frames per second)
Canon EOS Rebel T3i	3,7
Canon EOS 100D	4

Ability to record movies

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

In this case, both Canon EOS Rebel T3i and Canon EOS 100D 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 T3i weighs 570 gr (equal to 1.26 lb) which is 40% heavier than Canon EOS 100D and its 407 gr (or 0.9 lb).

Camera	Weight
Canon EOS Rebel T3i	570 gr 1.26 lb
Canon EOS 100D	407 gr 0.9 lb