With the B + W 010 IV MRC Nano X-Pro Digital filter you protect a super wide angle lens. Thanks to this filter you are objectively protected against scratches, dirt and bumps. The filter stops UV light, preventing unwanted light deviations. So you have less problems with blue spots and moving subjects. The filter is thin, allowing you to attach the original lens cap to the lens without removing the filter first. The Multi Resistant Coating ensures less reflection and light diffusion. Thanks to the Nano Coating, moisture and dirt spots can be removed quickly.