DatabaseImagingLens AccessoriesFilters67mm QuartzLine ND16 (4-Stop) FilterPolarPro 67mm QuartzLine ND16 (4-Stop) FilterPolarPro$99.99 MSRPKey FeaturesNeutral Density FilterRound Screw-In Format67mm Filter Thread67mm Front Thread4-Stop (ND16) Neutral Density16-Layer Multi-Coating+ Compare🔒 Log in to add this to a kit.OverviewSpecificationsThe ArchiveKey GripThe ArchiveDocumentsDocumentsSearchSortType▾1 documentsPolarPro 67mm QuartzLine ND16 (4-Stop) Filter Product PageManufacturer PagesWeb ↗Official PolarPro product page for the QuartzLine ND16 (4-Stop).