Product picture - Formatt Hitech 4x5.65" Color Graduated Tropic Blue 3 Schott-Desag B270 Crown Optical Glass Filter - Hard Edge Formatt, Hitech, 4x5.65, Color, Graduated, Tropic, Blue, 3, Schott-Desag, B270, Crown, Optical, Glass, Filter, Hard, Edge Click the image to close this page