Camera Eyecup Eyepiece for Canon EF Replacement Viewfinder Protector for Canon EOS 300D 350D 400D 450D 500D 550D 600D 1000D 1100D 700D 100D Canon Rebel XT XTi XS XSi T1i T2 T2i T3 T3i T4i T5i SL1 18mm Eyecup for Canon EOS and Canon Digital Rebel to prevent light entry due to BShutter/bulb shutter long exposure.A great accessory for all photographers. Replacement Eyecup compatible with Canon EOS 300D 350D 400D 450D 500D 550D 600D 1000D/1100D/700D/100D CANON Digital Rebel XT XTi XS XSi T1i T2 T2i T3 T3i T4i T5i SL1. Provides protection for canon camera eyepiece and keep the camera viewfinder away from dust. Plastic body cushioned with soft rubber for comfort and protect your eyes. Package includes 2 pieces of Rubber Eyecup for Canon EOS and Canon Digital Rebel. Designed to perfectly replace Canon Eyecup - Ef to prevent light entry due to Shutter/bulb shutter long exposure Plastic body cushioned with soft Rubber for comfort and protect your eyes, especially useful to eyeglass wearers. At the same time, the camera eyecup provides protection for canon camera eyepiece and keep the camera viewfinder away from dust. Its a great accessory for all photographers. Take off the original eyepiece and clean the attachment area. Insert the eyepiece into the viewfinder slot. The installation is complete.