Opteka 420-800mm f/8.3 HD Telephoto Zoom Lens for Canon EOS 80D, 77D, 70D, 60D, 60Da, 50D, 7D, 6D, 5D, 5DS, 1DS, T7i, T7s, T7, T6s, T6i, T6, T5i, T5, T4i, T3i, T3, T2i, SL2 and SL1 Digital SLR Cameras Newly improved 2017, manual focus, digitally-optimized telephoto zoom lens Super zoom 420-800mm focal length HD, super multicoated glass optics for the sharper images 4 Elements in 2 groups Rotating tripod mount