Firecrest ND 58mm Neutral density ND 3 (10 Stops) Filter for photo, video, broadcast and cinema production Firecrest technology is neutral across the whole spectrum, including UV, visible and infra red 58mm diameter stackable filter reduces light by 10 F-stops Firecrest multicoating technology makes the filter hydrophobic and scratch resistant Manufactured in the UK using Schott Superwite glass, the finest optical glass available