The lee seven5 neutral density nd grad set medium is designed for compact system cameras and contains three graduated resin filters 03 06 and 09 that enable the photographer to adjust exposure over part of the photograph without effecting colour balance these nd grads feature a medium transition from dark to light and are ideal for use when elements of the scene protrude into the sky be that the rooftops of buildings or the peaks of mountains the nature of the transition between coate