Nikon D100 vs Canon EOS 40D

This is a full comparison between the cameras Nikon D100 and Canon EOS 40D. We compare them by looking at the categories you see below.

Nikon D100

Canon EOS 40D

Manufacturing

Nikon D100 is manufacturered by Nikon but Canon EOS 40D is from Canon. Both Nikon and Canon are well known brands though.

Nikon D100 were released 2002 and Canon EOS 40D was released 2007. That is a 5 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Nikon D100	2002
Canon EOS 40D	2007

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Nikon D100 has a "Nikon DX"-sensor while Canon EOS 40D has a "Canon APS-C"-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 D100	75 mm Nikon DX sensor Crop factor/focal length multiplier by * 1.5
Canon EOS 40D	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 (Nikon)
Camera selection can affect the focal length (Canon)

Resolution

Nikon D100 has a 6 MP (Megapixels) resolution while Canon EOS 40D has 10,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Nikon D100	6 MP 6016000 pixels 3008 x 2000
Canon EOS 40D	10,1 MP 10077696 pixels 3888 x 2592

Canon EOS 40D has a 68 % larger resolution than Nikon D100. 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 40D has a larger ISO-range than Nikon D100. Canon EOS 40D has an ISO range that stretches from 100 to 3200 while Nikon D100 has 200 to 1600.

Camera	ISO Range
Nikon D100	200-1600
Canon EOS 40D	100-3200

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 D100
Lens compatibility chart for Canon EOS 40D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D100 can shoot up to 3 pictures per seconds and Canon EOS 40D can shoot up to 6,5 pictures per seconds.

Camera	FPS (Frames per second)
Nikon D100	3
Canon EOS 40D	6,5

Ability to record movies

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

Though, neither Nikon D100 or Canon EOS 40D can shoot movies so if that is a functionality that you are really looking for you should look elsewhere.

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 40D weighs 822 gr (equal to 1.81 lb) which is 5% heavier than Nikon D100 and its 780 gr (or 1.72 lb).

Camera	Weight
Nikon D100	780 gr 1.72 lb
Canon EOS 40D	822 gr 1.81 lb