The ND Filters Set meets the needs of photographers when shooting long-exposure photos or in strong lighting conditions (e.g. long-exposure timelapse). The filters provide experienced users with precise control over shutter speed, allowing them to produce smooth images in bright environments with lower shutter speeds. Flexible use of this set can ensure clean images even when the shutter opens at 180° with a low ISO. Especially optimized for the three-camera imaging system, the filters implement lower light reduction for the telephoto camera to avoid the situation where the wide-angle camera and the medium telephoto camera are properly exposed while the telephoto camera is underexposed.