Opteka 420-800mm f/8.3 HD Telephoto Zoom Lens with UV Filter and Tripod for Pentax Pentax K-1, K-3 II, KP, K-70, K-S2, K-S1, K-500, K-50, K-30, K-7, K-5, K
Amazon.com : Opteka 420-800mm f/8.3 HD Telephoto Zoom Lens Bundle Package includes 3 Piece UV-CPL-FL Filters + Tulip Hood + Cap Keeper + Lens Cleaning Kit for Canon EOS 5D Mark II
Opteka 420-800mm f/8.3 Telephoto Zoom Lens for Sony Alpha A Mount DSLR Cameras | eBay