NiSi ND-Vario 1-5 Stops True Color 105mm - This filter offers True Color that avoids color shift, seen in other Variable filters. The NiSi True Color ND-VARIO Pro Nano 1-5stops is made from high-definition optical glass for the best resolution and quality. ND-VARIO 1-5 Stops True Color is a variable neutral density filter that provides an exposure reduction of 1 to 5 EV. The density, ND factor, is stepless controlled by turning the filter. The degree of density is easily controlled by rotating the front filter ring with or without the included silver lever, helping you predetermine the additional exposure length required. This filter have built in stops when turning to end positions, to make you know "where you are" during action use. For easier, repeatable control over density settings, the front ring is visually marked with numbers representing the different stop values. The ring features silver side knurlings for a secure grip and easy installation and removal. For those using thi