Reddit reviews Neewer 4 Pieces Filter Kit for DJI Mavic Pro Drone Quadcopter Includes: ND4, ND8, ND16 and ND32 Filter, Made of Multi Coated Waterproof Aluminum Alloy Frame Optical Glass (MC-16)

【PLEASE CHECK "Installation Manual [pdf]" below on the "Product information-Technical Specification" part of the listing page.】NOTE: Please let the filter cover the gold thread on the lens when installing, or your drone will report a camera gimbal error resulting in it can not work properly. If it still reports an error, please remove the filter and check if the lint on the inner side of filter is stuck on the lens. If so, you could fix it back in place by hand and re-install.ND lens filters reduce the amount of light reaching the film without affecting the color; ND4 reduces the exposure by 2-stops; ND8 reduces the exposure by 3-stops; ND16 reduces the exposure by 4-stops; ND32 reduces the exposure by 5-stopsND lens filters allow you to have more control of the quadcopter' s aperture, exposure time and sensor sensitivity settings; Produce a shallower depth of field, or achieve a sharper photoUltra-Light design (1.42 grams) for smooth gimbal operation, avoiding causing the gimbal to overload and stop responding; Multilayer coating: Waterproof and durable; HD optical glass increases light transmission, no dark corners; Aluminum alloy frame sealing ring for better tightness, avoiding fall or looseIdeal for outdoor photography, capturing professional quality motion images and videos