The HOYA HMC TELE-AUTO 200mm 3.5 Lens in M42 mount is a high-quality telephoto lens designed for photography enthusiasts. With a maximum aperture of f/3.5, manual focus capabilities, and a focal length of 200mm, this lens is perfect for capturing detailed images from a distance. Made from durable aluminium, this lens is compatible with filters sized 58mm and is a reliable choice for those looking to expand their camera's capabilities.