The Canon 95mm Circular Polarizer PL-C B is compatible with lenses that have a 95mm filter thread. Its flat design prevents vignetting in the corners of images and lens reflections while shooting. Additionally, it makes colors appear more vibrant - the sky looks bluer and the leaves greener. Benefits: - For lenses with a 95mm filter thread - The flat design prevents the filter from darkening the corners of the image (vignetting) - Makes colors appear more vibrant - the sky becomes bluer and the leaves greener - Reduces reflections from non-metallic surfaces for clearer images.