Dial in varying amounts of density from scene to scene with the B+W 46mm XS-Pro Digital ND Vario MRC-Nano Filter. The 0.3 to 1.5 density filter helps to darken the image so that photographers can utilize longer shutter speeds or wider aperture settings with ease. With an exposure reduction of 1 to 5 stops, the filter allows better control over depth of field and helps to convey movement more easily. The filter has an MRC-Nano coating that offers both protection to the glass surface and also helps to increase light transmission and image quality. The nano coating provides an improved beading effect with water. As a result, cleaning and maintenance of the filter is easier.