Foto4easy 420-800mm F/8.3-16 Telephoto Zoom Lens with 2 X Teleconverter Lens and T2/T to EOS EF Mount Adapter for Canon EOS Rebel T1i T6 T6i T7i 5D 5DII 5DIII 6D 7D 7DII 70D 77D1200D 1300D Cameras