The High-Power 500mm f/6.3 Telephoto Lens is a manual focus mirror T-mount lens that is designed to work with full frame cameras and most digital SLR camera models, including Canon, Minolta, Nikon, Pentax, Samsung, and Sony. Its compact size provides superior lightweight handling and maximizes storage convenience. For best results, use with monopod, tripod or chest supports to alleviate shake. It has a minimum focus distance of 6.1 feet and a 5ÃÂ° angle of view. It has a 95mm front and 34mm rear thread.