There are two types of filters, UV filter and ND filter. UV filter is a filter, which can protect the camera lens and reduce the interference of ultraviolet to the camera; Nd mirror is a dimming mirror, which is divided into ND4, nd8, nd16 and nd32. It has different dimming amounts to achieve the effect of shutter gear reduction. It is very necessary to equip your UAV with a relevant filter, which can greatly improve the picture you shoot.
