This 39mm Urth ND2-32 (1-5 Stop) Variable ND Lens Filter Plus+ is a variable grey filter that reduces light by 1 to 5 stops, giving you more creative control in changing light. By blocking the light by 1 to 5 f-stops you can use a larger aperture or slower shutter speeds. This way you create a smaller depth of field or long exposure effects by using longer shutter speeds without overexposed images.
