Neutral Density (or ND) filters produce a grey neutral effect and are used to reduce light entering the camera, enabling control over exposure and depth of field without affecting color or contrast. ND’s are made in different densities according to the level of light reduction from 1 stop to 4 stops of light and are made from the highest quality 1.5mm optical resin.
Formatt Hitech 100 x125mm Blender Grad. Blenders feature an effect transition that occurs over the entire length of the filter. Starting at the top and graduating all the way to the bottom. This allows for a graduated effect across your image without any specific horizon line.