Canon EOS Rebel T7 vs Canon EOS 20D Astrophotography
These cameras are both manufacturered by Canon.Canon EOS Rebel T7 were released 2018 and Canon EOS 20D Astrophotography was released 2005. That is a 13 years difference. In tech, this period of time can be of interest since technology is always improving etc.
|Canon EOS Rebel T7||Canon||2018|
|Canon EOS 20D Astrophotography||Canon||2005|
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 Rebel T7||80 mm||(a Canon APS-C sensor have a crop factor / focal length multiplier by * 1.6)|
|Canon EOS 20D Astrophotography||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 Rebel T7||24 MP||24000000||6000||4000|
|Canon EOS 20D Astrophotography||8,2 MP||8185344||3504||2336|
Canon EOS Rebel T7 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 Rebel T7 has a larger ISO-range than Canon EOS 20D Astrophotography. Canon EOS Rebel T7 has an ISO range that stretches from 100 to 6400 while Canon EOS 20D Astrophotography has 100 to 3200.
|Canon EOS Rebel T7||100-6400|
|Canon EOS 20D Astrophotography||100-3200|
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 Rebel T7 can shoot up to 3 pictures per seconds and Canon EOS 20D Astrophotography can shoot up to 5 pictures per seconds.
|Camera||FPS (Frames per second)|
|Canon EOS Rebel T7||3|
|Canon EOS 20D Astrophotography||5|
Ability to record movies
It is becoming more and more popular to record movies with digital cameras.
When comparing these two cameras there is only one of them that can shoot movies and that is Canon EOS Rebel T7. Unfortunately Canon EOS 20D Astrophotography does not support recording movies and movie clips.
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 Rebel T7||475 gr||1,05 lb|
|Canon EOS 20D Astrophotography||770 gr||1,7 lb|