Light pollution is caused by the bright glow of artificial lights from towns and cities, which can be a problem for photographers taking pictures at night, adding a yellow color cast, haze, and reducing sharpness and contrast in your low-light shots, whether it's cityscapes, landscapes, or astrophotography.
A light pollution filter is designed to cut out the specific wavelengths of light emitted by artificial lights and the general glow of towns and cities, and should therefore deliver cleaner, sharper shots with impact.
