Vivitar 500mm f/8 Telephoto Lens + 2x Teleconverter = 1000mm For Canon Digital EOS Rebel SL1 (100D), T5i (700D), T4i (650D), T3 (1100D), T3i (600D), T1i (500D), T2i (550D), XSI (450D), XS (1000D), XTI (400D), XT (350D), 1D C, 70D, 60D, 60Da, 50D, 40D, 30D, 20D, 10D, 5D, Mark II, III, 1D X, 1D C, 1D Mark IV, 1D(s)Mark III, 1D(s)Mark II(N) , 5D Mark 2, 5D Mark 3, 7D, 6D Digital SLR Cameras The Telephoto lens is perfect for wildlife, nature, sports, and landscape photography. who wants to be hidden while taking photos of the subject. This is a refractor style lens, utilizing lightweight aluminum alloy construction. Low-dispersion optical glass. Fully multi-coated. Focuses to 33' (10 m) Thanks to its easy handling, the lens is also especially suitable for beginners. It comes complete with a 2x Teleconverter + T-Mount Ring + soft pouch