By filtering out the wavelengths of the artificial light you typically find in urban environments, the Light Pollution Reduction Filter for DJI Mini 4 Pro from Freewell lets you capture more realistic images of cityscapes, as well as more astronomical detail from the night sky. To ensure the filter can withstand multiple flights in the elements, Freewell gave it an optical coating that makes it dustproof, oilproof, scratch resistant, and color neutral.