Formatt Hitech Glass 4x5.65" (100x144mm) Black Supermist 1/8 diffusion filter for video, broadcast and cinema production comparable with Tiffen Black Pro-Mist Diffusion filter which reduces highlights and lowers contrast Available in 6 densities from 1/16 (most subtle effect) to 2 (heaviest effect) Great portrait filter, softens wrinkles and blemishes Made in the UK using Schott Superwite glass, the finest optical glass available Compatible with all 4"x5.65" matte boxes