The Nuance C-PL filters are made from high-resolution Schott B270i mineral glass and absorb one stop of light. In sunny weather, especially during the morning or evening hours, and when a right angle (90°) is maintained between the shooting axis and the position of the sun, a polarizing filter will darken the blue of the sky and enhance the contrast of the clouds. Polarizing filters significantly improve color saturation, resulting in more vibrant greens, more intense reds, and brighter yellows. You will be amazed to see how certain colors that appear dull to the naked eye become vivid and radiant with this filter. In all weather conditions, polarizing filters reduce, eliminate, and deepen reflections on non-metallic surfaces such as water or windows. They emphasize vegetation, transform bodies of water, and open up new perspectives. Note that with wide-angle lenses of 24mm and shorter (in terms of 35mm photography), the side of the image that is farthest from the sun appears darker than the other side. This is an unavoidable optical phenomenon that is independent of the polarizing filter.