The Asahi SMC Pentax-M 50mm f1.7 is a lens for cameras. It is made in Japan. The lens can be attached to cameras with a Pentax K mount.
The lens has a fixed focal length of 50mm. Thus, it is part of the group of normal lenses. The maximum aperture of the lens is f/1.7. The minimum aperture is f/22.
The focus distance must always be set manually. You need to maintain a distance of 45 cm for a sharp subject.
A filter with a 55mm thread, e.g., an ND filter, can be attached in front of the lens. If you place the lens on a scale, it shows 185 grams.
