The SMC Pentax-A 35-80mm f/4-5.6 Zoom Lens is a versatile lens designed for Pentax cameras with a PK mount. With a maximum aperture of F4 and a focal length range of 35-80mm, this lens is ideal for capturing a wide variety of subjects with ease. The lens is made of durable aluminum and features manual focus for precise control over your images. Additionally, it comes with a Quantaray 49mm filter to further enhance its performance and protect your lens from dirt and debris. Perfect for photographers looking to expand their creative capabilities with a reliable and high-quality lens.