The Canon Angle Finder C clips to the EOS camera eyepiece to make it easier to view the image with low-angle picture taking, or when the camera is on a copy stand.
The image is both the right way up, and the right way round.
Magnification can be switched from 1.
25x to 2.
5x for precise focusing.
The Canon Angle Finder C is supplied with adapters for all EOS eyepiece mounts.