The Urth 77 mm Solar ND100000 (16.6 stops) Filter Plus+ is a high-density neutral density filter designed for extreme light reduction in photography and videography applications. With a light reduction capability of 16.6 stops, this filter allows photographers to achieve creative effects in bright conditions that would otherwise be impossible. The ND100000 designation indicates that the filter reduces light transmission to 1/100,000 of the original intensity, enabling dramatically extended exposure times even in direct sunlight. This makes it particularly suitable for solar photography, long-exposure landscape shots in daylight, and creating motion blur effects in bright environments. The filter features a 77 mm threaded diameter, making it compatible with lenses that use this standard filter size, and is made from high-quality optical glass to maintain image quality. The multi-coated design minimizes reflections, lens flares, and ghosting while enhancing uniform light transmission across the entire spectrum. The aluminum alloy filter ring provides durability with a slim profile to reduce vignetting on wide-angle lenses. This filter is designed for photographers who require maximum light control under challenging lighting conditions, offering precise exposure control without the color cast issues often associated with high-density filters. The Urth Solar ND100000 Filter Plus+ represents a specialized tool for advanced photographic techniques where extreme light reduction is necessary for creative or technical purposes.