This vintage Mamiya/Sekor 35mm f/2.8 wide-angle prime manual focus lens is for use with M42 screw-mount cameras and adapters. There are a couple of scuffs and scratches on the barrel's exterior. Its focus and aperture adjustments are both smooth and its glass is free of any fungus, haze, or separation to its elements. There is no oil on its aperture blades.
