The ultraviolet filter absorbs the ultraviolet light rays that often make outdoor shots appear blurry and dull. It is a universal filter for both colour and black and white film in good weather. The UV filter can also be used as a "perpetual" lens protection in front of the lens. HMC (Hoya Multilayer Coating). This popular multi-coated filter is known for the fact that the reflections on its glass surface are extremely weak, which suppresses stray light and ghost images even more. An average transmission of over 97% is achieved, resulting in high brilliance and balanced color neutrality. The HMC filter from Hoya is recommended to take full advantage of the high performance of modern multi-coated lenses.