The cokin x pro w960 pro graduated neutral density filter kit contains cokin x pro filter holder plus x121l x121m and x121l filters x121l graduated g2 light gray filter 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 dont 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 lea