Digital multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by reflections. PRO1 Digital Filters feature a black matte aluminum satin finish amide frame which reduces reflections. PRO1 Digital Filters are equipped with black rimmed glass to reduce the chance of light reflecting off the edge. Ultra thin filter frame to help avoid vignette on super wide angle lenses are also designed to hold a lens cap. PRO1 Digital Filters are equipped with a straight knurling edge for non-slip, easy attachment and removal. The Kenko PRO1D Protector is ultimate in clear filters. It will not affect the color balance or performance of your lenses in the slightest. However, constant use will protect your valued lenses from expensive front element damage which could be caused by dirt, knocks or scratches.