The Canon MG-Ef Eyepiece Magnifier is a replacement eyepiece for
select Canon DSLR cameras. This eyepiece magnifies the image within the
viewfinder by approximately 1.2x. The increased magnification aids in
confirming subject focus and composition.
It is compatible with the Canon EOS Rebel T6i, T6s, T5i, T5, T4i, T3i, T3, T2i, T1i, SL1, XSi, and XS DSLR Cameras