NiSi Filter ND-Vario 5-9 Stops Pro Nano is a variable neutral density filter that provides an exposure reduction of 5 to 9EV. The density, ND factor, is stepless controlled by turning the filter.
This filter have built in stops when turning to end positions, to make you know "where you are" during action use.
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.
For best result we recommend using a variable ND filter on lenses with a focal length of 35mm or more (full frame).
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