The Urth 40.5mm Magnetic ND1000 (Plus+) is a high-quality lens filter specifically designed for photographers and videographers who desire precise control over the exposure of their shots. As an ND or neutral density filter, it reduces the amount of light hitting the sensor without compromising color reproduction. With a diameter of 40.5 millimeters, this filter is ideal for a variety of lenses. The magnetic attachment allows for easy and quick mounting and removal, significantly enhancing usability while shooting. The ND1000 filter is particularly useful in bright lighting conditions, as it enables longer exposure times, allowing for creative effects such as motion blur or the smoothing of water surfaces. The filter's robust construction and high optical quality ensure that your images remain sharp and clear. The Urth 40.5mm Magnetic ND1000 (Plus+) is a valuable addition to any photographic kit.