The Hoya ND 2 reduces light by the equivalent of one f-stop. For photographers, ND filters mean precise control of the amount of light passing through the lens to allow greater creative control of exposure. 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-engineered aluminum frame. Thanks to leading ACCU-ND technology, the image does not experience the negative effects of color shifts that can occur due to inferior materials, poor quality control during manufacturing, or problems with leakage from the infrared portion of the light spectrum. HOYA's exclusive ACCU-ND technology achieves uniform reduction of light in the visible and IR spectrums. As a result, the photographer does not have to worry about color shift problems when using HOYA ND filters under different shooting conditions
