Canon EOS 1D X Mark III vs Nikon D7100

This is a full comparison between the cameras Canon EOS 1D X Mark III and Nikon D7100. We compare them by looking at the categories you see below.

Canon EOS 1D X Mark III

Nikon D7100

Manufacturing

Canon EOS 1D X Mark III is manufacturered by Canon but Nikon D7100 is from Nikon. Both Canon and Nikon are well known brands though.

Canon EOS 1D X Mark III were released 2020 and Nikon D7100 was released 2013. That is a 7 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Canon EOS 1D X Mark III	2020
Nikon D7100	2013

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS 1D X Mark III has a "Canon Full Frame"-sensor while Nikon D7100 has a "Nikon DX"-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 1D X Mark III	50 mm Full-frame sensor No crop factor/focal length multiplier
Nikon D7100	75 mm Nikon DX sensor Crop factor/focal length multiplier by * 1.5

** 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)
Camera selection can affect the focal length (Nikon)

Resolution

Canon EOS 1D X Mark III has a 20 MP (Megapixels) resolution while Nikon D7100 has 24,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Canon EOS 1D X Mark III	20 MP 19961856 pixels 5472 x 3648
Nikon D7100	24,1 MP 24000000 pixels 6000 x 4000

Nikon D7100 has a 20 % larger resolution than Canon EOS 1D X Mark III. 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 1D X Mark III has a larger ISO-range than Nikon D7100. Canon EOS 1D X Mark III has an ISO range that stretches from 100 to 102400 while Nikon D7100 has 100 to 6400.

Camera	ISO Range
Canon EOS 1D X Mark III	100-102400
Nikon D7100	100-6400

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.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS 1D X Mark III
Lens compatibility chart for Nikon D7100

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS 1D X Mark III can shoot up to 20 pictures per seconds and Nikon D7100 can shoot up to 6 pictures per seconds.

Camera	FPS (Frames per second)
Canon EOS 1D X Mark III	20
Nikon D7100	6

Ability to record movies

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

In this case, both Canon EOS 1D X Mark III and Nikon D7100 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 1D X Mark III weighs 1440 gr (equal to 3.17 lb) which is 113% heavier than Nikon D7100 and its 675 gr (or 1.49 lb).

Camera	Weight
Canon EOS 1D X Mark III	1440 gr 3.17 lb
Nikon D7100	675 gr 1.49 lb