DHG (Digital High Grade) Circular Polarising Filters work in the same way as standard CPL filters, but have a thinner frame, designed to prevent vignetting when used with wide angle digital lenses. The frame also has a satin smooth finish and the edge of the glass is coated black to futher reduce lens flare and reflections. Made by Marumi.
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.