Cokin NUANCES LIGHTCATCHER mineral glass filters redefine neutrality in Neutral Density (ND) filters. Cokin have developed a new coating process to ensure uniform coloration: A nano metallic alloy is applied on both sides of tempered Schott Glass B270, renown for its high transmittance and low reflection. The result is stunning neutrality, completely free of infrared pollution. If required, multiple NUANCES filters can be stacked without colour cast. NUANCES filters are dedicated to long exposure outdoor photography or depth of field reduction, especially in filmmaking. They literally catch the light to create surreal images without colour cast.