Mamiya-Sekor SF C 150mm f4 soft-focus lens for RB67. This lens can be used at apertures of f8 and above as a “normal” 150mm lens, but open it up and insert any of the four included diffraction discs and get ready to FOCUS SOFTLY! It looks pretty nice actually. In good cosmetic condition, with some paint and finish wear. Clean glass, good shutter.