Objectives; optical lenses; filters for optical devices; lens filters; lenses for photographic apparatus; filters for use in photography; adapter rings for camera lenses; 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; macro lenses for photographic apparatus; focal length extenders in the nature of focal length extenders with different extension factors to adjust lenses to cameras; downloadable software for simulating the combination of cameras and lenses; tripods
Electrical and Scientific Apparatus