The Urth 77mm ND64 1000 (6 to 10 Stop) Variable ND Lens Filter is a high-quality screw filter specifically designed for photographers and videographers who seek precise control over the exposure of their shots. With a filter strength of ND1000, this filter allows for a reduction in light transmission by up to 10 stops, making it ideal for creating creative effects in bright lighting conditions. The filter has a diameter of 77 millimeters, making it compatible with a wide range of lenses. It is excellent for long exposures to create motion blur or to control depth of field in bright environments. The variable ND filter offers the flexibility to adjust the density as needed, making it a versatile tool for any photographic or cinematic application. The filter's construction ensures high optical clarity and minimizes unwanted reflections, so image quality is not compromised. The Urth ND64 1000 filter is therefore a valuable addition to the equipment of any creative professional.