Circular Polarizing Filter — Compatible With Canon TS-E135mm f/4L MACRO

Slim, lightweight aluminum frame designed to minimize vignetting while still permitting full rotation for polarization adjustment. A textured, nonslip upper rim makes mounting, turning and removal simple and secure. Optical glass is treated with double-sided, multi-layered coatings that are anti-oil, anti-dust, anti-soil, and resistant to scratches and water. This circular CPL reduces unwanted reflections on non-metallic surfaces such as water and glass, boosting color saturation and contrast. It is commonly used to intensify blues in the sky and definition in clouds, reduce haze in distant landscapes, and produce richer, more vivid colors. The filter works by arranging and filtering directionally polarized light perpendicular to reflected light so that much of the unwanted reflection is absorbed; the effect is strongest when used at a 90° angle from the sun.