Features:<br />- 6pcs/set ND4 ND8 ND16 MC-UV CPL Filter lens protector Lens Filter for DJI Phantom 3 Professional/Advanced/4K/Phantom 4 camera.<br /><br />For ND4 & ND8 & ND16 Lens filter:<br />ND4 reduces the intensity by two degree， ND8 reduces the inte