This filter is designed for wide angle and zoom lenses due to the low profile of the brass matte black ring. The ring has a front thread for additional accessories such as lens caps or hoods.
This filter incorporates the MRC (multi resistant coating) by B+W, an effective multiple layer coating which is harder than glass so it protects filters from scratches, and it is also water and dirt repellent. The coatings help keep the filter clean from smudges, reducing the need to clean as often as un-coated filters. The XSP coating is an added outer 8th layer protection over the MRC coating, This layer creates a beading effect with liquid, allowing water to simply drip off.