The samyang 500mm f8 dx mc if mirror t mount lens is a manual focus fixed f80 aperture telephoto lens typically designed for wildlife and sport enthusiasts the lightweight durable metal construction can withstand the everyday duties of a photographer on the move and the multi coated mc coatings provide high light transmission to ensure stills and movies are sharp and clear the samyang 500mm f8 lens can be mounted to digital slrs with a cropped or full frame sensor and require a t2 univer