NiSi ND-Vario 1-5 Stops True Color 77mm

NiSi 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 this filter with cinema or video cameras, combined adjustments of aperture and this filter allow fine adjustments of the depth of field while retaining the designated frame rate.Very useful for both photography and video, as you can adjust exactly the amount of light that enters the lens for each given scene.In this way, larger apertures and/or longer shutter speeds can be used than would otherwise be possible under current lighting conditions.An advanced nano coating is used to repell water, grease and dirt and makes the filter easier to clean. A thin filter ring assures that there is no risk of vignetting when used on wide-angle lenses. The filter ring is made from high-quality aluminum creating a very light and strong filter. True Color result that avoids color shift seen in other Variable filters Variable 0.3 to 1.5 Neutral Density Reduces Exposure by 1 to 5 Stops Exposure Range-Control Filter Ring with Hard Stops at Each End No “X” Effect High Definition optical glass Nano Coating, Waterproof and Anti-Reflective Coating An optional rotating lever that can be removed Larger front thread to avoid vignetting on wider lenses Front protection included Small bag included For best result we recommend using a variable ND filter on lenses with a focal length of 35 mm or more (full frame).