Urth 77mm ND4 2 Stop Double-Threaded Nano-Coating Circular Lens Filter Plus with Ultra-Slim RimThe 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. 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. Effect Cinematographers can use the ND4 Filter Plus to create more cinematic effects in low light without losing quality or