ABOUT ND FILTERS Neutral density (ND) filters are the most sought-after and important photographic filter types for several reasons. For photographers, ND filters mean precise control of the amount of light that passes through the lens to allow greater creative control of exposure. For video content creators, ND filters are very helpful in adjusting shutter speeds to match frame rates 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 uniform reduction of light in the visible and IR spectrums. The Hoya ND 100000 allows shooting for more than 1 hour in direct sunlight, making the filter especially suitable for photographing special events such as a solar eclipse. With more than 16.5 stops of light reduction, the filter results in 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 lifelike color reproduction at extremely long exposure times.
