Opteka 420-800mm (w/ 2x- 840-1600mm) f/8.3 HD Telephoto Zoom Lens for Canon EF-Mount 90D, 80D, 77D, 70D, 60D, 50D, 7D, 6D, 5D, T8i, T7i, T7s, T7, T6s, T6i, T6, T5i, T5, T4i, T3i, SL3, SL2 DSLR Cameras

QUICK SPECS: Push/Pull Zoom, Manual Focus, Minimum Focus Distance: 5.25′ (1.6 m), Aperture -16, Filter Size 62mm, 4 Elements in 2 groups Multi-coated Glass Optics, Rotating Tripod Mount, 5-Year Warranty
NEW AND IMPROVED: The Newly improved Opteka 420-800mm lens incorporates multi coated glass optics for the sharper images. Its 4 elements in 2 groups have been digitally-optimized to give the best image possible without braking the bank. A built in rotating tripod mount has also been added to help stabilize the lens especially when using the 2x converter which increases the zoom to an incredible 1600mm.
ADVANCED OPTICS: Featuring an optimized design, this lens uses mirrors and a series of 4 optical glass elements in 2 groups to reduce chromatic and spherical aberrations. A anti-reflective coating suppresses lens flare and ghosting for increased contrast and color fidelity.