Haida NanoPro Mist Black Variable ND offers 1.5 to 5 stops that incorporate a 1/8 layer of mist coating. The filter darkens the entire image, allowing you to photograph with a wider aperture or slower shutter speed than usually possible to reduce the depth of field or extend shutter speeds to increase image blur.
In addition, compared with the two filters of mist black and ND, this new filter is not only light to carry but also performs well in dark angle control.
