High-Power 500mm/1000mm f/8 Manual Telephoto Lens for Canon Digital EOS Rebel T2i, T3, T3i, T5, T5i, T6i, T6s, T7i, SL1, EOS60D, EOS70D, EOS 5D, EOS5D III, EOS 5Ds, EOS 6D, EOS 7D II Cameras - White High-power 500mm telephoto focal length Includes T-mount adapter for digital and 35mm Canon EOS SLR cameras High index, low-dispersion multi-coated optical glass to reduce flare 2X Teleconverter doubles the power of your lens to 1000mm. Filter thread: 67mm