Hoya 77mm Graduated Neutral Density (ND10) Filter (3 to 1 Stop) The Graduated ND10 balances exposure between the brightest and darkest areas of a scene Filter provides a gradual transition from 3-stops of light at the top of the filter to 1-stop at the bottom Manufactured from super high quality Hoya Clear optical glass Assembled using a two-piece aluminum frame creating a rigid, durable, but lightweight filter that can be rotated to meet your creative needs Perfect for Still and Video applications