ProMaster 100 x 150mm Soft GND8X (0.9) - HGX PrimeProMaster 100 x 150mm Soft GND8X (0. 9) HGX Prime Mfr SKU: 37413 Helix SKU: PR37413 Overview: This Soft Graduated Neutral Density Filter reduces 3 stops of light in its grey, neutral density area and it has a soft, long transition between its ND and clear sides. It allows you to balance exposure in compositions were a large difference between light and dark exists. Position the dark area of the filter over the bright portion of the scene and carefully