Nuances C-PL are manufactured from mineral high-resolution glass Schott B270i and absorb 1 f-stop of light. In sunny weather, especially during the morning or evening hours, and when maintaining a right angle (90°) between the shooting axis and the position of the sun, a polarizing filter will darken the blue of the sky, enhancing the clouds' contrast. Polarizing filters significantly improve color saturation, resulting in greener greens, richer reds, and more brilliant yellows. You will be amazed to see how certain colors, which appear dull to the naked eye, become vibrant and dazzling with this filter. In all weather conditions, polarizing filters reduce, eliminate, and deepen reflections on non-metallic surfaces such as water or windows. They enhance vegetation, transform bodies of water, and open up vistas. Note that with wide-angle lenses of 24mm and shorter (in 35mm photography terms), the side of the image farthest from the sun will appear darker than the other side. This is an unavoidable optical phenomenon, independent of the polarizing filter.