Opteka 420-800mm f/8.3 HD Telephoto Zoom Lens for Canon EOS-M M100, M10, M6, M5 and M3 Compact Digital Mirrorless Cameras

"The ultimate super-telephoto zoom lens.For photographers seeking the ultimate super-telephoto zoom lens, the Opteka 420-800mm HD II delivers unrivaled consistency, long range performance and image quality in the most demanding situations. An advanced...