The Tiffen Attenuator / Blender screw-in ND filters have been designed to offer a fine degree of neutral light control attenuation on wide-angle lenses. The smooth transition across the surface of the filter is designed to aid light control within your image area for a number of purposes, including maintaining a constant exposure range across your image when you have a bright sky. This ND grad features a density strength of 1.2 which allows you to increase exposure by four stops to suit individual situations.
