B+W XS-Pro Filters
These filters use the B+W XS-Pro Digital mount which is especially suited for DSLRs with wide angle and zoom lenses. The XS-Pro Clear Protective and UV filters are mounted in a thin 3.5mm mount and the XS-Pro Circular Polarizer is mounted in a thin 5mm mount, and both still have front threads for additional accessories such as lens caps or hoods. Industry leading B+W uses only the highest quality German Schott glass for outstanding results every time. All XS-Pro Digital mounts are made of brass and are matte black to prevent reflections.
The Nano coating is an outer layer of protection that comes standard with all XS-Pro Digital Nano MRC filters. 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. The MRC Nano coating has an improved outer (8th) layer over regular MRC coatings.
B+W Filters are manufactured in Germany.