The 82mm UV filter Manufactured from Water-White Schott （B270） Glass made in Germany, and our state-of-the-art nano coating 16 layers. light transmission rate ≥ 99.5% | This 82mm UV filter uses our S-Pro Digital mount which is especially suited for DSLRs with wide angle and zoom lenses. It has a front thread for additional accessories,And it isn't easy to fall off.All Pro Digital mounts are made of aerometal and are matte black to prevent reflections. | The MRC nano UV Filter 82mm has an improved outer layer over regular MRC. The nanotechnology based characteristic produces a better beading effect with water making the cleaning of this filter even simpler and faster than ever before.Set in our completely weather-sealed S-Pro traction frame the MRC UV was built to withstand the harshest of environmental conditions. | The Jongsun MRC UV Filter 82mm features a 3.5mm ultra-slim double-threaded traction frame to eliminate vignetting on wide-angle full-frame setups. With fine workmanship, mounted a gold thread is placed on the outside of the aerometal to make it more beautiful. | We laser engrave lettering into each MRC UV traction frame to ensure that the lettering won’t ever fade or come off after consistent use.