Nikon D5100 vs Canon EOS 1D X Mark III

This is a full comparison between the cameras Nikon D5100 and Canon EOS 1D X Mark III. We compare them by looking at the categories you see below.

Nikon D5100
Canon EOS 1D X Mark III

Manufacturing

Nikon D5100 is manufacturered by Nikon but Canon EOS 1D X Mark III is from Canon. Both Nikon and Canon are well known brands though.

Nikon D5100 were released 2011 and Canon EOS 1D X Mark III was released 2020. That is a 9 years difference. In tech, this period of time can be of interest since technology is always improving etc.

Camera Manufacturer Released
Nikon D5100 Nikon 2011
Canon EOS 1D X Mark III Canon 2020

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Nikon D5100 has a "DX"-sensor while Canon EOS 1D X Mark III has a "FF"-sensor, and their difference in sensors will also effect the crop factor and experience focal length. See the table below.

Camera Experienced focal length when using a lens with 50mm focal length (ex a common "50mm f/1.8")
Nikon D5100 75 mm (a Nikon DX sensor have a crop factor / focal length multiplier by * 1.5)
Canon EOS 1D X Mark III 50 mm (a fullframe sensor does not have a crop factor / focal length multiplier)

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Nikon)
Camera selection can affect the focal length (Canon)

Resolution

Nikon D5100 has a 16,2 MP (Megapixels) resolution while Canon EOS 1D X Mark III has 20 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels Pixel (total) Pixels (width) Pixels (height)
Nikon D5100 16,2 MP 16084992 4928 3264
Canon EOS 1D X Mark III 20 MP 19961856 5472 3648

Canon EOS 1D X Mark III has a 24 % larger resolution than Nikon D5100. This could give you more details in the picture but also a possibility to crop more in the pictures, afterwards while editing the pictures, if needed that is.

ISO range

Canon EOS 1D X Mark III has a larger ISO-range than Nikon D5100. Canon EOS 1D X Mark III has an ISO range that stretches from 100 to 102400 while Nikon D5100 has 100 to 6400.

Camera ISO Range
Nikon D5100 100-6400
Canon EOS 1D X Mark III 100-102400

Autofocus and lens compatibility

There is a big diffence between these two cameras. Canon EOS 1D X Mark III has a built-in autofocus motor but Nikon D5100 does not. If you want to be able to use autofocus on Nikon D5100 there is a need for having an autofocus motor inside the lens. We really encourage you to look closely at our lens compatibility charts at the links below.

Here is a complete overview of which lenses that work with each camera:
Lens compatibility chart for Nikon D5100
Lens compatibility chart for Canon EOS 1D X Mark III

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definately be of interest. Nikon D5100 can shoot up to 4 pictures per seconds and Canon EOS 1D X Mark III can shoot up to 20 pictures per seconds.

Camera FPS (Frames per second)
Nikon D5100 4
Canon EOS 1D X Mark III 20

Ability to record movies

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

In this case, both Nikon D5100 and Canon EOS 1D X Mark III can shoot movies.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, carried around, for several hours at the time.

Canon EOS 1D X Mark III weighs 1440 gr (equal to 3,17 lb) which is 136% heavier than Nikon D5100 and its 611 gr (or 1,35 lb).

Camera Weight (in gram) Weight (in pounds)
Nikon D5100 611 gr 1,35 lb
Canon EOS 1D X Mark III 1440 gr 3,17 lb