The NiSi Cinema 4×5.65″ Nano IRND Vertical Soft-Edge Graduated 0.9 Filter (3 Stop) is a graduated neutral density filter that darkens bright areas of an image, such as skies while leaving the remainder of the frame unaffected. The Vertical GND is designed specifically for the NiSi C4 Cinema Holder and the GND can be shifted up and down to selectively target the brighter part of the scene. (NOTICE: Filter product images are rendered examples. Actual product appearance and effect will vary.)