BIRUGEAR Replacement Eyecup - EF for Canon Rebel T6s, T6i, T5, T5i, T4i, T3, T3i, T2i, T1i, XSi, XTi, XS Digital Camera This high quality eyecup is 100% compatible with Canon Eyecup EF-C. Custom designed to provide cushioning around the camera's eyepiece. Two small clips on the back secures the eyepiece onto your camera. Block out unwanted light from your viewfinder. Camera not included.