The Hoya ND 500 EX reduces the light by an equivalent of 9 f-stops. 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. Thanks to the leading ACCU-ND technology, the image does not experience any negative effects from color shifts that can occur due to inferior materials, poor quality control during manufacturing or problems with leakage in the infrared range of the light spectrum. With HOYA's exclusive ACCU-ND technology, an even reduction of light in the visible and IR spectrum is achieved. As a result, the photographer does not have to worry about color shift problems when using HOYA ND filters under different shooting conditions.
