Nikon D300 vs Canon EOS 5D Mark III

This is a full comparison between the cameras Nikon D300 and Canon EOS 5D Mark III. We compare them by looking at the categories you see below.

Nikon D300

Canon EOS 5D Mark III

Manufacturing

Nikon D300 is manufacturered by Nikon but Canon EOS 5D Mark III is from Canon. Both Nikon and Canon are well known brands though.

Nikon D300 were released 2006 and Canon EOS 5D Mark III was released 2012. That is a 6 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Nikon D300	2006
Canon EOS 5D Mark III	2012

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Nikon D300 has a "Nikon DX"-sensor while Canon EOS 5D Mark III has a "Canon Full Frame"-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 **
Nikon D300	75 mm Nikon DX sensor Crop factor/focal length multiplier by * 1.5
Canon EOS 5D Mark III	50 mm Full-frame sensor No crop factor/focal length multiplier

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

Resolution

Nikon D300 has a 12,3 MP (Megapixels) resolution while Canon EOS 5D Mark III has 22,3 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Nikon D300	12,3 MP 12212224 pixels 4288 x 2848
Canon EOS 5D Mark III	22,3 MP 22118400 pixels 5760 x 3840

Canon EOS 5D Mark III has a 81 % larger resolution than Nikon D300. 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 5D Mark III has a larger ISO-range than Nikon D300. Canon EOS 5D Mark III has an ISO range that stretches from 100 to 25600 while Nikon D300 has 200 to 6400.

Camera	ISO Range
Nikon D300	200-6400
Canon EOS 5D Mark III	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.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Nikon D300
Lens compatibility chart for Canon EOS 5D Mark III

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D300 can shoot up to 6 pictures per seconds and Canon EOS 5D Mark III can shoot up to 6 pictures per seconds.

Camera	FPS (Frames per second)
Nikon D300	6
Canon EOS 5D Mark III	6

Ability to record movies

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

It is only one of these two cameras that support recording movies and movie clips and that is Canon EOS 5D Mark III. Sadly, the Nikon D300 does not support this.

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 5D Mark III weighs 950 gr (equal to 2.09 lb) which is 3% heavier than Nikon D300 and its 925 gr (or 2.04 lb).

Camera	Weight
Nikon D300	925 gr 2.04 lb
Canon EOS 5D Mark III	950 gr 2.09 lb