The Hoya HMC UV(0) are professional UV filters with exceptionally high transmission and perfect color balance. Increased resistance of the tempered glass. UV filters cut unwanted ultraviolet rays, reduce haze and increase clarity. In addition, the UV filter serves very well as a protective glass for the lens. 12 Layer Coated 99.7% Transmission Filter with reinforced glass 40% less weight than conventional filters 3mm filter mount for wide angle shooting with front thread.