Product picture - Formatt Hitech 6.6x6.6" Color Graduated Cool Blue 2 Schott-Desag B270 Crown Optical Glass Filter - Hard Edge Formatt, Hitech, 6.6x6.6, Color, Graduated, Cool, Blue, 2, Schott-Desag, B270, Crown, Optical, Glass, Filter, Hard, Edge Click the image to close this page