BIRUGEAR Replacement Eyecup - EF for Canon Rebel T3, Rebel T3i, Rebel T2i, Rebel T1i, Rebel XSi, Digital Rebel XTi, Rebel XS Brand new BIRUGEAR canon eyecup EF. This high quality eyecup is 100% compatible with Canon Eyecup EF. 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.