Freewell FW-H9B-ND16 Overview GoPro Hero 9 Cinematic Settings with ND Filters | RehaAlev Control the light input on your GoPro HERO9 Black action camera with this ND16 Filter from Freewell. The Freewell 4K series filter is designed to darken the image, to help you control exposure when capturing photos or video outdoors. The ND16 filter cuts the amount of light hitting the camera sensor by four f-stops, allowing you to shoot with a wider aperture or slower shutter speed than normally required. The filter is coated to prevent dust, scratches, water, or oil from accumulating on your lens, and it features an efficient bayonet-style design to replace the original front lens element. A magnetic case is included to store and transport the filter. Compatibility GoPro HERO9 Black action camera ND16 Neutral Density Filter The ND16 filter decreases the amount of light entering the camera lens by four f-stops. This is helpful in balancing the image perfectly and capturing sharp footage in normal daylight conditions. Apart from slowing down your shutter speed, the ND filters are also effective in avoiding the unwanted 'jello' effect, which is often seen in footage captured without ND filters. Use of them does not imply any affiliation with or endorsement by them.