ABOUT ND FILTERS Neutral density (ND) filters are the most popular and important type of photographic filter for several reasons. For photographers, ND filters provide precise control over the amount of light passing through the lens to allow greater creative control over exposure. For video content creators, ND filters are very helpful in setting shutter speeds to adjust the frame rate while maintaining the depth of field of the footage. PROND filters use HOYA's clear optical glass mounted in a lightweight, precision-machined aluminum frame. HOYA's exclusive ACCU-ND technology achieves an even reduction of light in the visible and IR spectrum. The Hoya ND 100000 allows exposures of more than 1 hour in direct sunlight, which makes the filter particularly suitable for photographing special events such as a solar eclipse. With more than 16.5 stops of light reduction, the filter provides exposure times of several minutes in bright sunlight. Hoya uses a precise metal vapor deposition process to create the ultra-dark ND effect while maintaining a very neutral color balance for true-to-life color rendition at extremely long exposure times.
