B+W 77mm XS-Pro Digital ND Vario MRC-Nano Filter

B+W 77mm XS-Pro Digital ND Vario MRC-Nano Filter Like new condition, never used. Key Features Variable 0.3-1.5 Neutral Density Filter Reduce Exposure by 1-5 Stops Darkens Entire Image Greater Control Over Exposure Settings Allows Reduced Shutter Speed Allows Wider Aperture MRC Multi-Resistant Coating Nano Coating 82mm Front Filter Threads Slim Aluminum Filter Ring The B+W 77mm XS-Pro Digital ND Vario MRC-Nano Filter is a solid variable neutral density filter providing an exposure reduction of 1 to 5 stops. The 0.3 to 1.5 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. The degree of density is easily controlled by rotating the front filter ring, helping you to predetermine the additional exposure length required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily. For easier, repeatable control over density settings, the front ring is also visually demarcated with dots that represent different density values.