Manual 500mm F8 Telephoto Mirror Lens With T2-eos Adapter Ring For Canon 80d 77d 70d 60d 7d 5d Mark Ii 750d 700d 650d 1200d 100d - Camera Lenses - AliExpress
Amazon.com : Lightdow 900mm F8.0 Telephoto Mirror Lens + T2 Mount Adapter Ring for Canon EOS Rebel T7 T7i T6 T6i T5 T5i SL2 80D 77D 700D 70D 60D 50D 5D 6D