Camera Plus -Professional Slim 40mm S-PRO MC-UV Multi Coated 40mm UV Filter - special size 40mm for Fuji X10 and X20 X30 Combination of both an infrared control filter and a neutral density filter Designed for use with CCD or CMOS sensors in order to filter out infrared light pollution causing color shifts that are commonly associated with high definition recording. 3.0 ND filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required. Improved color fidelity and wider gamut that is especially noticeable in the shadows and darker regions of the image. Made using hight quality Schott optical glass. Digital water proof and scratch resistant multi-coating offers both protection to the glass and helps to reduce lighting reflection on the filter surface.