This PENTAX SMC Pentax-M 50mm f1.7 MF lens is a great addition to any photographer's collection. It has a maximum aperture of f/1.7, which allows for stunning images with a shallow depth of field. The lens is compatible with Pentax cameras and has a Pentax K mount. The focal length of 50mm makes it a standard lens, perfect for everyday photography.

The exterior of the lens is made of aluminum, giving it a sturdy and durable feel. It has a manual focus, allowing for precise control over the focus of your images. The lens is compatible with 49mm filters and has a compatible lens front of 49mm. This unit is in great condition and has been tested, ensuring it is ready to be used by its new owner.