GSI Super Quality Eyepiece Extender For the CANON 40D, 30D, 5D, 20D, 10D, D60, D30, EOS 400D, 450D, 350D, 300D, 1000D, Digital Rebel XT, XTi, XSi, EOS Rebel K2, T2, Ti - Functions Exactly as the Canon Eyecup EF