Often it is necessary or desirable to balance the light intensity in one part of a scene with another. This is especially true in situations where you don't have total light control, as in bright contrasty landscapes. Exposing for the foreground will produce a washed-out, over-exposed sky while exposing for the sky will leave the foreground dark and under-exposed. Hitech 85mm Graduated Neutral Density (ND) 1.2 Resin Filter allows the transition to be blended into the scene, often imperceptibly. The hard edge is recommended for normal and longer lenses. This filter measures 85 x 107mm and fits the Cokin P series holder.