OKKO Pro CPL Circular Polarizer Lens Filter (67mm)When light reflects, this often creates a whitish haze, an effect known as polarizing. The Okko Pro CPL Circular Polarizing Filter cuts out this haze, allowing you to capture crisp, clear images. Key Features Japanese ACG Optical Glass, 16 layers of Nano Coating Ultra thin filter frames to help avoid vignetting Aluminium and Copper Frame with 2 Waterproof Coatings Adjustable polarization Anti reflective coating Ultra high definition Slim filter frames