RainbowImaging Pro1 Digital Pro1D slim 52mm UV (Ultra Violet) Multi Coated Glass Filter Ultra thin 1mm glass, Multi-Coated glass. Pro Multi-Coated. Pro Digital multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by reflections. Black Almite Frame Filters feature a black matte. Black Rimmed Glass. These filters are equipped with black rimmed glass to reduce the ghost. Low Profile Frame Ultra thin filter frames (3MM) to help avoid vignetting on super wide angle lenses are also designed to hold. Knurling Edge Frame . These filters are equipped with a straight knurling edge for non-slip, easy attachment and removal.