This SMC Pentax-M 1:2 50mm lens is a high-quality camera lens made by Asahi Opt. Co. in Japan. It is compatible with PENTAX cameras and has manual focus. The lens is designed for photography enthusiasts who capture stunning images with ease. Its focal length of 50mm is perfect for portraits and general photography. The brand is renowned for its durable and reliable products, making this lens a great addition to your collection.