Nikon D3s vs Canon EOS 550D

This is a full comparison between the cameras Nikon D3s and Canon EOS 550D. We compare them by looking at the categories you see below.

Nikon D3s

Canon EOS 550D

Manufacturing

Nikon D3s is manufacturered by Nikon but Canon EOS 550D is from Canon. Both Nikon and Canon are well known brands though.

Nikon D3s were released 2009 and Canon EOS 550D was released 2010. That is a 1 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Nikon D3s	2009
Canon EOS 550D	2010

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Nikon D3s has a "Nikon FX"-sensor while Canon EOS 550D 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 D3s	50 mm Full-frame sensor No crop factor/focal length multiplier
Canon EOS 550D	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 D3s has a 12,1 MP (Megapixels) resolution while Canon EOS 550D has 18,7 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Nikon D3s	12,1 MP 12052992 pixels 4256 x 2832
Canon EOS 550D	18,7 MP 17915904 pixels 5184 x 3456

Canon EOS 550D has a 49 % larger resolution than Nikon D3s. 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

Nikon D3s has a larger ISO-range than Canon EOS 550D. Nikon D3s has an ISO range that stretches from 200 to 102400 while Canon EOS 550D has 100 to 12800.

Camera	ISO Range
Nikon D3s	200-102400
Canon EOS 550D	100-12800

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 D3s
Lens compatibility chart for Canon EOS 550D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D3s can shoot up to 11 pictures per seconds and Canon EOS 550D can shoot up to 3,7 pictures per seconds.

Camera	FPS (Frames per second)
Nikon D3s	11
Canon EOS 550D	3,7

Ability to record movies

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

In this case, both Nikon D3s and Canon EOS 550D can shoot movies.

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.

Nikon D3s weighs 1240 gr (equal to 2.73 lb) which is 143% heavier than Canon EOS 550D and its 510 gr (or 1.12 lb).

Camera	Weight
Nikon D3s	1240 gr 2.73 lb
Canon EOS 550D	510 gr 1.12 lb