The 100mm lee nd graduated soft resin filter set is made up of three 100x150mm nd grad filters 03 06 and 09 with a soft dark to light transition soft nd grads perform best in woodland mist or interiors anywhere where there is no definite transition between sky and foreground a soft grad will gently balance exposure across the image placing the neutral density part darker area of the filter onto the sky in the frame will reduce the sky exposure and this enables cloud detail to be ke