Absorbs the ultraviolet rays which often makes outdoor photographs hazy and indistinct. A multi-purpose filter for color as well as black and white films. Also serves as a permanent lens protector. Pro-Optic Pro Digital Multi Coated Filters are renowned for their ability to minimize reflection and reduces flare and ghosting. The result is an average light transmission of over 97%, giving sharp contrast and well balanced color. Pro-Optic Pro Digital Multi Coated filters are recommended for enhancing the performance of today's multicoated lenses.