The Hoya ND 1000 reduces light by an equivalent of 10 stops. Neutral density filters (ND filters) are among the most sought-after and important 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 setting shutter speeds to match the frame rate while maintaining the depth of field of the footage. PROND filters use HOYA's clear optical glass, which is mounted in a lightweight, precisely crafted aluminum frame. Thanks to the leading ACCU-ND technology, the image is 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. With HOYA's exclusive ACCU-ND technology, a uniform reduction of light in the visible and IR spectrum is achieved.