Opteka

Super 500mm/1000mm f/8 Manual Telephoto Lens for Pentax K-1, K-S2, K-S1, K-500, KP, K-70, K-50, K-30, K5 IIs, K-7, K-5, K-3 II, K-2, K-X, K20D, K100D, K110D and K10D Digital SLR Cameras

The 500mm f/8 High Definition Preset Telephoto Lens is an excellent addition to any photographer's collection, giving users the ability to expand their creativity and capture incredible scenes from a truly unique perspective. The Super 500mm / 1000mm...