This filter from Fotodiox is specially made for the GoTough WonderPana Go Filter Adapter System from Fotodiox Pro. This ND Filter is a true neutral density filter designed to darken the image by naturally reducing the amount of light entering the lens. It features an even, neutral gray color for creative video and photo applications. Neutral Density filters have their unique applications and offer the possibility of achieving otherwise impossible results, allowing you to slow down the shutter speed or use a larger aperture in bright light conditions for creative depth of field. Fotodiox ND filters are a true neutral grey and do not color cast the images, the filters are coated to prevent color shift, reflections and haze.