B07L8NTYXC Opteka 500mm f/8 High Definition Telephoto Mirror 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, T3, SL2 and SL1 DSLR Cameras

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High definition optics produce sharper, more intense pictures
Incredibly compact and lightweight, Fully Multi-coated, Manual Focus
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
10 Year Warranty