The Urth 77mm ND8 128 (3 7 Stop) Variable ND Lens Filter is a high-quality neutral density filter designed specifically for photographers and videographers who seek precise control over the exposure of their shots. With a diameter of 77 millimeters, this screw-on filter is easy to mount and suitable for a variety of lenses. The ND128 filter reduces the amount of light hitting the sensor by up to 7 stops, allowing for creative effects even in bright lighting conditions. This is particularly useful for long exposures or when using larger apertures to achieve a shallow depth of field. The filter is made from high-quality materials that ensure excellent optical clarity and minimize unwanted color distortions. The Urth ND8 128 filter is a valuable addition to any photo or video equipment, providing a flexible solution for light control challenges.