Haze Filters do just what they sound like, they filter out haze which is created by minute particles of vapor and dust. Haze settles in the atmosphere and can affect distant photographic scenes. Haze forms when sunlight is scattered by minute particles of matter that exist in the air. Atmospheric conditions have an effect on the amount of haze in the air. Mist, fog, smog, smoke and clouds are all different than haze. Green and red light are scattered by haze, but not as much as ultraviolet radiation, violet and blue light. If you use filters to absorb scattered sunlight you can penetrate the haze. Any filter that can absorb scattered sunlight can be considered a haze filter.
Contrast filters can be used for cutting haze, but they affect the gray tone rendering of colored items. Contrast and correction filters that can absorb shorter wavelengths are the generally the most effective. The best type of filter for haze is an infrared model. These filters usually range in price from about $10 to $800. They come in various sizes.