This filter uses our XS-Pro Digital mount which is especially suited for DSLRs with wide angle and zoom lenses. It has a front thread for additional accessories. All XS-Pro Digital mounts are made of brass and are matte black to prevent reflections. * MRC nano has an improved outer (8th) layer over regular MRC. The nanotechnology based characteristic (lotus effect) produces a better beading effect with water making the cleaning of this filter even simpler and faster than ever before. * Manufactured from Water-White Schott Glass