Attention! For your device is available official mobile app "All Photo Lenses" from AllPhotoLenses.com.
Download it and you will be able to work with the lens database is much faster and easier.
Not now Details
The Yashica Yashinon-DS 50 mm f/1.7 is a standard prime lens for 35 mm SLR cameras with the M42 screw mount.
The lens body is all-metal. The focus ring is rubberized.