FotodioX EyeVenger Eyecup Kit for Canon DSLRs

Upgrade your Canon DSLR's standard eyecup with the EyeVenger Eyecup Kit from Fotodiox, which both blocks light from entering the viewfinder and improves comfort. It offers both right and left eyecups for customizing to your preference or shoot and uses a design that minimizes light leak. Also, it has mounting pieces for compatibility with either an 18mm or 22mm eyepiece.