The Hoya ND 1000 reduces light by an equivalent of 10 stops. Neutral density filters (ND filters) are among the most sought-after and essential types of photographic filters for several reasons. For photographers, ND filters provide precise control over the amount of light entering the lens, allowing for greater creative control over 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 utilize Hoya's clear optical glass, which is mounted in a lightweight, precisely crafted aluminum frame. Thanks to the leading ACCU-ND technology, images are not negatively affected by color shifts that can occur due to inferior materials, poor quality control during manufacturing, or issues with the infrared range of the light spectrum. Hoya's exclusive ACCU-ND technology ensures a uniform reduction of light in both the visible and IR spectrum.