Canon Dioptric Lens ED -4

For the Canon EOS 50, 5 and 3 film SLR cameras, Canon ED Dioptric Lenses provide near and far-sighted users with a clear viewfinder image without wearing spectacles. Canon dioptric lenses only handle simple eyesight defects of long and short sight, they may not help other eyesight problems.

Price: 25.99 from Wex Photo Video