B+W UV filter MRC nano master 46 mm is a classic protective filter that blocks the disturbing UV component from daylight. The invisible UV light occurs more intensively in pure sea air and in high mountains, which can lead to blurring and a blue cast. The color-neutral UV filters ensure more brilliant images. These filters can remain permanently on the lens, providing protection against dirt and damage. The high-quality MRC nano coating offers optimum reflection reduction.