Old Lenses All lenses come with front and rear lens caps and lens guards. Used with Sony E-mount via mount conversion adapter. Model Name: XR RIKENON 50mm f2 Lens Diameter: 52mm Mount Type: K-mount Kenko MC PROTECTOR Lens Guard Commonly known as "Poor Man's Summicron" Early model with a minimum focusing distance of 45cm Made by Tomioka Optical? #oldlens #TomiokaOptical