The Hoya IRND64 is an ND filter that allows you to reduce light by 6 stops. An ND filter, or neutral density filter, ensures that the exposure of your shots is decreased across the entire image area. Light is reduced, so you experience fewer issues with overexposed photos. The IR-Cut battery ND technology guarantees reliable results throughout the image. Thanks to its water and oil repellent properties, the filter element is protected during use. The low-profile frame adds no extra bulk to your camera. Features: - Filter size: 72 mm - Reduces light by 6 stops.