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 low-light shots, whether it's cityscapes, landscapes, or astro work.
The best light pollution filters are designed to cut out specific wavelengths of light from artificial street lamps and the glow of towns and cities, and should therefore deliver cleaner, sharper shots with more impact.
