Essential Circular Polarizing filters improve overall picture quality in two ways. First, it increases contrast and color saturation, for example, increases the contrast of the blue sky. Second, it reduces the reflections that are often seen in water, glass and reflective surfaces. The Manfrotto polarizer ensures a uniform distribution of light; therefore maintains the balance and sharpness of color in the images. The Professional CPL filter is water-repellent, scratch-resistant and oil-resistant and has a unique antistatic coating. It consists of 2 layers that allow 68% of light transmission. Multilayer coating Each Manfrotto filter has been developed with the highest precision. The elaborate multilayer coating process minimizes reflections and maximizes light transmission, thus delivering remarkable optical quality. The anti-reflexivity of the filters increases proportionally to the number of coating layers. In addition, thanks to multiple layers, Manfrotto filters provide a superior level of protection against dust, moisture and scratches.