These layers also provide a higher maximum light transmission and a more consistent transmission curve for truer light reduction. The Plus range features 20 layers of nano-coating, providing easier cleaning and better protection against water, oil, and scratches. Cinematographers can use the ND4 Filter Plus to create more cinematic effects in low light without losing quality or overexposing the shot. With less light entering your camera, you can also use wider apertures in low light for a beautiful shallow depth of field effect without overexposing images. The Urth ND4 2 Stop Circular Lens Filter Plus provides a fixed 2 f-stop light reduction for better control with long exposure and depth of field techniques in low light.