NUANCES Extreme filters are made of a highly resistant mineral glass, able to resist accidental fall and introducing innovative technology. A new coating process ensures an uniform density and a nano metallic alloy is applied on both side of a highly resistant tempered glass, resulting in a stunning neutrality. Nuances Extreme Reverse Grade ND16 allows up to 4 f.stops of light compensation with a soft transition from the middle of the filter to the top, effect of the filter is therefore less marked than on soft Grade filters. Round corners and 2mm thickness makes Nuances Extreme filters easier to insert in extreme conditions. COKIN recommends the use of EVO filter-Holder to ensure an efficient light-leaks protection.