Harmony B30 +1 Close-up lens

Two piece Japanese close up lens set designed for close up photography at distances closer than 1 meter. The set includes two glass optical lenses (one for the taking lens and one for the viewing lens) The larger one that goes over the viewing lens has a built-in prism for parallax correction so the view in the ground glass coincides with the photograph even at short range. The lenses fit Rollei