The Hoya Fusion Antistatic UV Filter has a specially developed coating with a dust-repellent effect, perfect for environments with a lot of dust. These filters require less cleaning and maintenance than traditional filters and the hardened, antistatic top layer is water-repellent, stain and scratch resistant! The Fusion antistatic professional filters are made in Japan from hand-selected silicates that have been carefully melted and blended to deliver high performance.