The lee seven5 graduated neutral density 03 06 09 filter kit includes three hard edge graduated neutral density filters a 03 reduces light by 1 stop a 06 reduces light by 2 stops and a 09 reduces light by 3 stops 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