This 77mm ND3-ND1000 Variable ND Filter from Neewer provides an increase in neutral density through a range from 1.5 to 10 stops. 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.
The filter is made from optical glass that features multicoating for reduced lens glare, and resistance coating that resists water, oil, dust, fingerprints, and scratches, making it ideal for use in harsh environments, and also easy to clean.
Note: This 77mm filter requires a larger 82mm lens cap, not included.