Description: Germany Schott Optical Glass, double side 18 layer multi-coating, high definition. 2.3mm ultra thin frame design, avoid dark corner, ideal for wide angle lenses. 10 Stop exposure correction enables you to control the depth of field and movements more easily. Set your white balance properly to have better color balance. Protect lens from dust, oil, moisture, fingerprints and scratches. Package Includes: 1x ND Filter