Used Formatt Hitech 4x5.65" Neutral Density (ND) 0.9 HD Optical Glass Filter

The Formatt Hitech 4x5.65" Neutral Density (ND) 0.9 HD Optical Glass Filter produce a Gray neutral tone and are used in photography to reduce light, enabling more control over exposure and depth of field without affecting color contrast. This filter is clear in the bottom half of the filter with a gradual transition to the ND effect in the top half. They are primarily used for light reduction in skylines of landscape shots. ND Grads are made in different densities according to the level of light reduction from 1 stop to 4 stops of light. Formatt-Hitech cinema filters are made from the highest quality Schott Superwite glass.