Crop Factor

The crop factor of a camera refers to how large it's imaging sensor is when compared to a 35mm full frame sensor. The crop factor can be used to calculate the equivalent field of view between cameras with different sensor sizes.


CameraSensor SizeCrop Factor
Canon EOS 5D mkIVFull Frame1.0
Canon EOS 7DAPS-C1.6x

To calculate the effective field of view for the 7D, you can multiply the focal length of a lens by 1.6x.

Focal Length5D mkIV
Equiv Field of View
Equiv Field of View
20 mm20 mm36 mm
50 mm50 mm80 mm
100 mm100 mm160 mm