Crafted for fine lenses, HGX Prime filters are individually ground, polished, and coated. They repel dirt and transmit brilliant light to achieve the clearest possible image. Repellamax II Anti-static barrier resists dust, dirt, oil, water and fingerprints. Cutting-edge multi-coatings and black rimmed glass pass the clearest light to your sensor. Constructed from Ultra hardened glass with scratch resistant coating.