Review on Camera Eyecup Eyepiece Viewfinder Eyeshade for Canon EOS 6DM2 5DM2 6D 5D Mark II 90D 80D 77D 70D 60D 50D 4000D 2000D Rebel T100 T8i T7i T7 T6s T6i T6 T5i T5 T4i SL3 SL2 - Canon EB EF Eye Cup Replacement by Eric Williamson

Much better than the Hoodman I once had and which many other photographers have always used. This eyepiece snaps into the eyecup viewfinder and remains locked. You are over a month old. I think this is the best I've ever bought so I ended up getting another one for my Sony camera and it fits my Sony a77ii perfectly. The Sony eyecup fits all Sony cameras and that's why I'm making this statement: I order one for the a7riii and the A7 series and it also works with A-mount bodies. Not sure about Canon if it does The new one fits Canon mirrorless cameras, but fits all EOS DSLRs exactly.