The 82mm Wolverine Magnetic Variable Neutral Density Filter with Adapter Ring from Kase provides an increase in neutral density through a 1.5 to 10-stop range. Increasing neutral density offers finer control in available shutter speeds or aperture settings for both still and video applications. Using a longer shutter speed makes it possible to increase blur to convey a sense of movement, or to dial in a video camera frame rate. Increased density also makes it possible to shoot using wider lens apertures, helping to isolate a subject from the background and increasing bokeh.