JJC 52mm Circular Polarizing FilterJJC F WCPL52 Ultra Slim Multi Coated Circular Polarizing Filters are especially designed to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non metallic surface such as water and glass, ensure noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy condition. The effect can be seen through the viewfinder and changed by rotating the filter.