ZoMei Ultra Slim AGC Optical Glass PRO CPL Circular Polarizing Polarizer Lens Filter - 82mm Original AGC Optical Glass from Japan, high transmittance and polarization rate Ultra slim frame design, only 4.68mm thickness, avoid dark corner, suitable for wide-angle lens Increase the color saturation, makes the color of some of these objects more vibrant Manage reflections, or suppress glare from non-metal surface, such as water and glass Change the color of the sky from a light pale blue color to a vibrant and deep blue color