ND Filter for DJI O4 Pro camera. The filter has an aluminum frame and is made of high quality AGC glass, which is typically used for diopter glasses.
ND filters dampen the amount of light that hits the camera chip. This increases exposure time and causes a slight blurring of the edges of the video at higher speeds. This makes the video appear smoother and more natural. The value of the ND filter should be selected according to the light intensity.
The second version of ND filters is narrower (20.6mm) and fits into the drone frames between the aluminum sidewalls.