Marumi Digital High Grade filters have been specially designed with Digital Photography in mind. Each filter uses a specially developed ultra-low reflection coating to minimize internal reflection off the cameras built-in CCD and cmOS Sensors. Other anti-reflect features include a special slim frame with satin smooth finish and a black ink process on the glass edge to eliminate flare. Thin mount design polarising filter with ultra-low reflection coating. Filter can be rotated to reduce reflection off highly reflective surfaces also increases colour saturation under sunshine bright conditions.