Canon EOS 20D Astrophotography vs Canon EOS 850D
These cameras are both manufacturered by Canon.Canon EOS 20D Astrophotography were released 2005 and Canon EOS 850D was released 2020. That is a 15 years difference. In tech, this period of time can be of interest since technology is always improving etc.
|Canon EOS 20D Astrophotography||Canon||2005|
|Canon EOS 850D||Canon||2020|
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 20D Astrophotography||80 mm||(a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)|
|Canon EOS 850D||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)
|Camera||Megapixels||Pixel (total)||Pixels (width)||Pixels (height)|
|Canon EOS 20D Astrophotography||8,2 MP||8185344||3504||2336|
|Canon EOS 850D||24 MP||24000000||6000||4000|
Canon EOS 850D has a 193 % 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.
|Canon EOS 20D Astrophotography||100-3200|
|Canon EOS 850D||100-25600|
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.
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 Canon EOS 850D can shoot up to 7,5 pictures per seconds.
|Camera||FPS (Frames per second)|
|Canon EOS 20D Astrophotography||5|
|Canon EOS 850D||7,5|
Ability to record movies
It is becoming more and more popular to record movies with digital cameras.
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.
|Camera||Weight (in gram)||Weight (in pounds)|
|Canon EOS 20D Astrophotography||770 gr||1,7 lb|
|Canon EOS 850D||515 gr||1,14 lb|