Opteka 500mm f/8 High Definition Mirror Telephoto Lens for Canon EOS 80D, 77D, 70D, 60D, 60Da, 50D, 7D, 6D, 5D, 5DS, 1DS, T7i, T7s, T7, T6s, T6i, T6, T5i, T5, T4i, T3i, SL2 and SL1 Digital SLR Cameras HD, super multicoated glass optics with anti-reflection coating for the sharper images Manual focus, compact, lightweight digitally-optimized telephoto lens Gives you the equivalent of looking through a pair of 10x power binoculars Soft pouch and three (3) rear mounted, 30.5mm filters, (ND-2X, ND-4X & Skylight) May be combined with the Opteka 2X Multiplier for 1000mm Zoom (Sold separately - 47st Photo Item Code: B000JSZ41S)