Lee Seven5 Graduated ND Hard Filter - ND 0.6 (2 Stops)The Lee Seven5 Graduated Neutral Density 0. 6 Hard Filter features a hard graduation and is designed to reduce exposure by 2 stops without affecting colour balance. Neutral density graduated filters enable you to balance light intensity in one part of a scene with another. For example, when photographing a landscape in which the sky is much brighter than the foreground, placing the neutral density part of the filter onto the sky in the frame will