Canon EOS 20D Astrophotography vs Nikon Df

This is a full comparison between the cameras Canon EOS 20D Astrophotography and Nikon Df. We compare them by looking at the categories you see below.

Canon EOS 20D Astrophotography
Nikon Df

Manufacturing

Canon EOS 20D Astrophotography is manufacturered by Canon but Nikon Df is from Nikon. Both Canon and Nikon are well known brands though.

Canon EOS 20D Astrophotography were released 2005 and Nikon Df was released 2013. That is a 8 years difference. In tech, this period of time can be of interest since technology is always improving etc.

Camera Manufacturer Released
Canon EOS 20D Astrophotography Canon 2005
Nikon Df Nikon 2013

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS 20D Astrophotography has a "APSC"-sensor while Nikon Df has a "FX"-sensor, and their difference in sensors will also effect the crop factor and experience focal length. See the table below.

Camera Experienced focal length when using a lens with 50mm focal length (ex a common "50mm f/1.8")
Canon EOS 20D Astrophotography 80 mm (a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)
Nikon Df 50 mm (a fullframe sensor does not have a crop factor / focal length multiplier)

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

Resolution

Canon EOS 20D Astrophotography has a 8,2 MP (Megapixels) resolution while Nikon Df has 16 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 20D Astrophotography 8,2 MP 8185344 3504 2336
Nikon Df 16 MP 16163840 4928 3280

Nikon Df has a 97 % larger resolution than Canon EOS 20D Astrophotography. This could give you more details in the picture but also a possibility to crop more in the pictures, afterwards while editing the pictures, if needed that is.

ISO range

Nikon Df has a larger ISO-range than Canon EOS 20D Astrophotography. Nikon Df has an ISO range that stretches from 100 to 12800 while Canon EOS 20D Astrophotography has 100 to 3200.

Camera ISO Range
Canon EOS 20D Astrophotography 100-3200
Nikon Df 100-12800

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.

Here is a complete overview of which lenses that work with each camera:
Lens compatibility chart for Canon EOS 20D Astrophotography
Lens compatibility chart for Nikon Df

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definately be of interest. Canon EOS 20D Astrophotography can shoot up to 5 pictures per seconds and Nikon Df can shoot up to 5,5 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS 20D Astrophotography 5
Nikon Df 5,5

Ability to record movies

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

Though, neither Canon EOS 20D Astrophotography or Nikon Df 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 20D Astrophotography weighs 770 gr (equal to 1,7 lb) which is 1% heavier than Nikon Df and its 760 gr (or 1,68 lb).

Camera Weight (in gram) Weight (in pounds)
Canon EOS 20D Astrophotography 770 gr 1,7 lb
Nikon Df 760 gr 1,68 lb