Hoya 40. 5mm Fusion Antistatic UV Filter Description. Hoya engineers have developed a new ANTISTATIC coating that acts like a force field around the filter to repel dust. Perfect for environments where dust is common these filters require less frequent cleaning and maintenance than traditional filters. Additionally the hardened antistatic top-layer is water repellent stain and scratch resistant and cleans easily when smudges or fingerprints are introduced to the surface. The filters UV properties filter unwanted ultra-violet rays reducing haze and increasing clarity. The new FUSION Antistatic professional filters are made in Japan using hand selected silicates that are carefully smelted and blended to yield high performance optical glass. Hoya then uses extreme care and precision to apply the Improved 9-layer Super Multi-coating formula which greatly reduces or eliminates reflections on the surface of the glass and yields a ultra clear high transmission rate. This means the filter has virtually no effect on the color balance contrast or clarity of the final image. The filters features a lightweight one-piece low-profile aluminum frame to house the glass. This one-piece design allows the filter to maintain perfect parallel alignment to the sensor plane for maximum sharpness while the low-profile form eliminates vignetting when used on ultra-wide-angle lenses.