Samyang 500mm Mirror F8 T Mount Manual Focus Lens

Amazing 500mm focal length at an affordable price Fully multi-coated, low-dispersion optical glass Focuses to 33' (10m) Aperture range of f/8.0 to f/32.0 T2 lens system uses interchangeable adapters (available separately) to allow fitment to Canon, Nikon, Sony, Pentax, Olympus and Contax camera mounts