Opteka 650-1300mm f/8 HD Telephoto Zoom Lens for Sony Alpha A99, A77, A65, A58, A57, A55, A37, A35, A33, A900, A700, A580, A560, A550, A390, A380, A330 and A290 Digital SLR Cameras Manual focus telephoto lens compatible with full-frame sensors as well as APS-C sensors 8 Lens elements in 5 groups, low-dispersion multi-coated HD optical glass to reduce flare Great for the wildlife or nature photographer who wants to be hidden while taking photos of the subject Built-in tripod collar for improved lens balance Newly improved 2017, digitally-optimized telephoto zoom lens