Canon EOS 1Ds Mark III vs Canon EOS Rebel XSi
This is a full comparison between the cameras Canon EOS 1Ds Mark III and Canon EOS Rebel XSi. We compare them by looking at the categories you see below.
These cameras are both manufactured by Canon.Canon EOS 1Ds Mark III were released 2007 and Canon EOS Rebel XSi was released 2008. That is a 1 years difference. In tech, this period can be of interest since technology is always improving, etc.
|Canon EOS 1Ds Mark III||2007|
|Canon EOS Rebel XSi||2008|
Type of camera
Both these cameras are DSLR cameras. No difference there.
Sensors / crop factor
These cameras have different sensors. Canon EOS 1Ds Mark III has a "FF"-sensor while Canon EOS Rebel XSi has a "APSC"-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 1Ds Mark III||50 mm
No crop factor/focal length multiplier
|Canon EOS Rebel XSi||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 (Canon)
Canon EOS 1Ds Mark III has a 21,1 MP (Megapixels) resolution while Canon EOS Rebel XSi has 12,2 MP. If we break down this in more detail this is the data behind the numbers:
|Canon EOS 1Ds Mark III||
5616 x 3744
|Canon EOS Rebel XSi||
4272 x 2848
Canon EOS 1Ds Mark III has a 73 % larger resolution than Canon EOS Rebel XSi. 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.
Canon EOS 1Ds Mark III has a larger ISO-range than Canon EOS Rebel XSi. Canon EOS 1Ds Mark III has an ISO range that stretches from 50 to 3200 while Canon EOS Rebel XSi has 100 to 1600.
|Canon EOS 1Ds Mark III||50-3200|
|Canon EOS Rebel XSi||100-1600|
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 1Ds Mark III
Lens compatibility chart for Canon EOS Rebel XSi
Pictures per second
Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS 1Ds Mark III can shoot up to 5 pictures per seconds and Canon EOS Rebel XSi can shoot up to 3,5 pictures per seconds.
|Camera||FPS (Frames per second)|
|Canon EOS 1Ds Mark III||5|
|Canon EOS Rebel XSi||3,5|
Ability to record movies
It is becoming more and more popular to record movies with digital cameras.
Though, neither Canon EOS 1Ds Mark III or Canon EOS Rebel XSi can shoot movies so if that is a functionality that you are really looking for you should look elsewhere.
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 1Ds Mark III weighs 1385 gr (equal to 3,05 lb) which is 164% heavier than Canon EOS Rebel XSi and its 524 gr (or 1,16 lb).
|Canon EOS 1Ds Mark III||1385 gr
|Canon EOS Rebel XSi||524 gr