The phot r eb eyepiece for canon eos cameras is a replacement eyepiece for select canon eos slr and eos dslr cameras the eyepiece provides a comfortable frame with which to utilise the cameras viewfinder and blocks unwanted light from entering the viewfinder made from soft and durable rubber it also prevents scratching and damage to eyeglasses it mounts easily and securely to the viewfinder and is compatible with select canon eos cameras the eyepiece is designed for comfort so you can eas