B+W UV Filter 40.5 mm MRC. The UV filter enhances color reproduction and eliminates blurriness caused by ultraviolet radiation. The filter glass is mounted in an F-Pro filter mount made of brass. Ultraviolet light is invisible to the eye and is commonly found in mountain areas, coastal regions, and places with very clear air. UV filters are colorless and do not require any extension of exposure time. A UV filter should be permanently mounted on the lens as a protective filter.
MRC Anti-Reflection Coating
MRC stands for multi-resistant coating with 7 layers of anti-reflective coating plus an additional protective layer that resists dirt, moisture, and is highly scratch-resistant — with a surface that makes cleaning easier.
F-Pro Filter Mount
The F-Pro filter mount is 5 mm thick, made of brass, with accessory threads on the front. The brass is coated with a matte black finish to minimize reflections. F-Pro can be used on most lenses down to 24 mm (format 24x36) without causing vignetting.
B+W is one of the world's leading manufacturers of camera filters, with a long history of technical innovation and a unique product catalog used daily by professional photographers worldwide. With over 100 years of experience in optics and filter manufacturing, B+W offers unmatched expertise in the field. B+W filters stand out due to their excellent optical and mechanical properties.