The HOYA HD Mk II IRND filters are the new premium ND filters from HOYA, covering the most common densities ND8, ND64, and ND1000. With HOYA's industry-leading ACCU-ND technology, the filters provide uniform light reduction across the entire visible spectrum and prevent negative color casts due to IR pollution during long exposure shots. The ultra-thin frame reduces the risk of vignetting, and the water-repellent coating allows for easy and quick cleaning. Particularly recommended for advanced and professional photographers who frequently use ND filters and have high demands for image quality.