The Hoya ND 64 reduces the light by an equivalent of 6 f-stops. ABOUT ND FILTERS Neutral density (ND) filters are the most sought after and important photographic filter types 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. HOYA offers both photographers and filmmakers its own exclusive and wide range of ND filters embedded in the PROND series. PROND filters use HOYA's clear optical glass mounted in a lightweight, precision-machined aluminum frame. The frame has a front filter thread so that you can attach additional filters or a lens cap. 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 problems with leakage in the infrared part of the light spectrum. The last problem is the most important in photography and videography today. With HOYA's exclusive ACCU-ND technology, a uniform 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.
