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
Auto Mamiya / Sekor 135 mm f/ 2.8 - fast telephoto prime lens for a 35mm SLR with M42 screw mount.
There are two version of the lens (one with built in hood, an eigth blades aperture, minimum focus 1.8m).