Optical devices, namely, photo and film lenses; optical enhancers in the nature of adapters to connect lenses to cameras; optical correctors being lens adapters for use in cine and photography; objectives; macro lenses for photographic apparatus; lens filters; optical lenses; lenses for photographic apparatus; filters for use in photography; filters for optical devices; adapter rings for camera lenses; focal length extenders in the nature of focal length extenders with different extension fac...