High-Power 500mm/1000mm f/8 Manual Telephoto Lens for Canon EOS 80D, EOS 90D, Rebel T3, T3i, T5, T5i, T6i, T6s, T7, T7I, T8I, SL3, EOS 60D, EOS 70D, EOS 5D, EOS5D IV, EOS 6D II, EOS 7D II SLR Cameras Review