Features 4 sets of ND\'s for your drone . Perfect for those who are wanting to step up video quality The ND Filters Set includes ND4 ND8 ND16 and ND32. These high-quality light-reducing ND filters provide advanced users with precise control over shutter speed and ensure clean footage even when the shutter opens to 180° with low ISO during recording.* . Made of high-quality light reduction materials this filters set helps you capture true colors and stunning highlight and low-light details. A precise snap-joint design ensures a reliable fit and lens seal during flight* Shutter opening angle is a common way of describing the shutter speed relative to the frame rate. For example if the camera is recording at 24 fps with the shutter open at 180° the exposure time is 1/48 second. Specification . Light Transmission Size. 12.5 x 8.2mm (tele lens); 19.8 x 16.2mm (wide-angle lens) Individual Weight. 2.3g What\'s in the box? 1 x ND4 Filter . 1 x ND8 Filter . 1 x ND16 Filter . 1 x ND32 Filter . 1 x Case