The Urth 49mm ND8 (3 Stop) lens filter is a high-quality screw filter designed specifically for photographers and videographers who seek precise control over the exposure of their shots. With a diameter of 49 millimeters, this neutral density filter is ideal for a variety of lenses. The ND8 filter reduces the amount of light hitting the sensor by three stops, allowing for longer exposure times or a wider aperture to be used in bright lighting conditions without overexposing the images. This is particularly useful for capturing motion, such as flowing water or moving subjects, as it creates a smooth blur. The filter is easy to attach and remove, providing flexible handling during shooting. With its robust construction and high optical quality, the Urth ND8 filter is a valuable addition to any creative professional's gear.