Absorbs the ultraviolet rays which ofter makes outdoor photographs hazy and indistinct. A Multi-pirposr, fine-weather filter for color as well as black and white photos. Also serves as a permanent lens protector. Digital Multi Coating Specially formulated to pass light reflected off of a digital camera's anti aliasing filter and silicon based CCD or COMS sensor. Black Almite Frame and Black Rimmed Glass The black matte aluminum satin finish almite frame and black rimmed glass help reduce stray and unwanted reflections. Low Profile Frame Ultra thin low profile frames prevent vignetting on super wide digital format lenses. Knurled Frame Edge Frames feature a knurled edge frame for easy attachment. UV Protected Cases Filter cases are UV protected to further lengthen the life of filters. Made in Japan