Sunpak DF-7059-CP 58mm Coated Circular Polarizer Multi-Coated Circular Polarizer Filter Increases Color Saturation & Contrast By Reducing Reflections From Non-Metallic Surfaces & By Cutting Through Haze Deepens Sky Color Generally Requires Through The Lens Viewing 58Mm Increases color saturation and contrast by reducing reflections from non-metallic surfaces and by cutting through haze Deepens sky color Coating reduces glare on lens