The Urth 37mm ND8 128 (3 7 Stop) Variable ND Lens Filter is a high-quality neutral density filter designed specifically for photographers and videographers who desire precise control over the exposure of their shots. With a diameter of 37 millimetres, this screw filter is easy to mount and suitable for a variety of lenses. The ND8 128 filter allows for a reduction in light by up to 7 stops, which is particularly useful for achieving creative effects in bright lighting conditions, such as motion blur or a shallower depth of field. The variable ND feature offers flexibility, enabling the user to adjust the filter's density to achieve the desired exposure settings. This filter is ideal for landscape, portrait, and architectural photography and helps enhance image quality by minimising unwanted reflections and maintaining colour balance. The Urth ND filter is a valuable addition to any photographic kit.