Opteka 500mm / 1000mm f/8 High Definition Preset Telephoto Lens For Canon EOS Digital SLR Cameras Bundle with Opteka 58mm 0.43X HD Wide Angle Lens with Macro & Lens & Filter Accessories (
Amazon.com : Opteka 500mm/1000mm f/8 Manual Telephoto Lens for Canon EOS EF-Mount 90D, 80D, 77D, 70D, 60D, 60Da, 1Ds, Mark III II 7D, 6D, 5D, 5DS, Rebel T8i, T7i, T7s, T7, T6s,
Is Canon Working On a Smaller, Lighter 1000mm f/5.6 Super Telephoto Lens? | Shutterbug