The Tiffen 4.5" Standard Coated Clear Round Filter is a simple, transparent filter designed for general lens protection. This optically clear filter does not affect overall image quality while helping to reduce dust, scratches, moisture, and other elements that could damage your lens. This filter features a standard coating to help reduce glare and improve light transmission.nnTiffen filters are manufactured using ColorCore technology; a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding it flat to a tolerance of 1/10,000th of an inch, and then mounting it on precision metal rings.nnFeatures:nn- Clear filter provides general protection for your lens against the elements.n- Standard coating to reduce lens flare and improve light transmission.nnSpecifications:nn- Type: Clear protectionn- Size: 4.5" / 114.3 mm (diameter)n- Filter Factor: 0n- Effect: Provides protection to camera lensn- Construction: ColorCore Technologyn- Front Filter Thread Size: 4.5" / 114.3 mm (diameter)n- Front Lens Cap Size: 4.5" / 114.3 mm (diameter)