Canon EOS 40D vs Canon EOS Rebel XTi

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

Canon EOS 40D
Canon EOS Rebel XTi

Manufacturing

These cameras are both manufacturered by Canon.

Canon EOS 40D were released 2007 and Canon EOS Rebel XTi was released 2006. That is a 1 years difference. In tech, this period of time can be of interest since technology is always improving etc.

Camera Manufacturer Released
Canon EOS 40D Canon 2007
Canon EOS Rebel XTi Canon 2006

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

Both these cameras have the same sorts sensor (called "APSC") which means that if you compare the cameras side by side the lenses will also have the same experienced focal length. Neither of the cameras have a Full frame sensor which means that you will get a "crop factor" where the cameras sensor size effect the focal length with a multiplier.

Camera Experienced focal length when using a lens with 50mm focal length (ex a common "50mm f/1.8")
Canon EOS 40D 80 mm (a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)
Canon EOS Rebel XTi 80 mm (a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)

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

Resolution

Both these cameras has the exact same resolution. Canon EOS 40D has a 10,1 MP (Megapixels) resolution while Canon EOS Rebel XTi has 10,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels Pixel (total) Pixels (width) Pixels (height)
Canon EOS 40D 10,1 MP 10077696 3888 2592
Canon EOS Rebel XTi 10,1 MP 10077696 3888 2592

ISO range

Canon EOS 40D has a larger ISO-range than Canon EOS Rebel XTi. Canon EOS 40D has an ISO range that stretches from 100 to 3200 while Canon EOS Rebel XTi has 100 to 1600.

Camera ISO Range
Canon EOS 40D 100-3200
Canon EOS Rebel XTi 100-1600

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that supports autofocus, does not have a autofocus motor of their own but this wont cause any problems with these two cameras.

Lens compatibility chart for Canon EOS 40D
Lens compatibility chart for Canon EOS Rebel XTi

Pictures per second

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

Camera FPS (Frames per second)
Canon EOS 40D 6,5
Canon EOS Rebel XTi 3

Ability to record movies

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

Though, neither Canon EOS 40D or Canon EOS Rebel XTi 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, carried around, for several hours at the time.

Canon EOS 40D weighs 822 gr (equal to 1,81 lb) which is 48% heavier than Canon EOS Rebel XTi and its 556 gr (or 1,23 lb).

Camera Weight (in gram) Weight (in pounds)
Canon EOS 40D 822 gr 1,81 lb
Canon EOS Rebel XTi 556 gr 1,23 lb