The SMC PENTAX-M 50mm SLR 35mm Camera Lens is a high-quality, manual focus lens designed for Pentax cameras with a K mount. With a maximum aperture of f/2 and focal length of 50mm, this lens is perfect for capturing wide-angle shots with beautiful depth of field. The lens is made of durable brass and features a 52mm front lens and filter size, compatible with HOYA 49mm UV filters. Designed by PENTAX in Japan, this lens is ideal for photographers looking to add a versatile and sharp lens to their collection.