Mamiya Medium Format Lenses | Mamiya-Sekor 135Mm F/4.5 Seiko Lens For Tlr, Black {46}

Mamiya Lenses For Twin Lens Cameras Were Available From 55Mm To 250Mm. 80Mm Was The Normal (Standard) Focal Length. Most Lenses In The Later Models Allowed For The Winding Crank To Cock The Shutter.