The Tiffen 4.5" Premium 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 premium multi-coating that helps reduce lens flare, improve light transmission, and maintain contrast and colour fidelity.nnTiffen filters are manufactured using ColorCore technology; a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.nnFeatures:nn- Clear filter provides general protection for your lens against the elements.n- Premium multi-coating to reduce lens flare, improve light transmission, and maintain colour fidelity and contrast.nnSpecifications:nn- Type: Clear Protectionn- Size: 4.5" / 114.3 mm (diameter)n- Filter Factor: 0n- Multi-coated: Yesn- 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)