The Tiffen Filter Wheel 3 Standard Coated Clear Filter is a simple, transparent filter designed for the general protection of your lens. This optically transparent filter does not affect the overall image quality whilst helping to reduce dust, scratches, moisture and other elements that could damage your lens. This filter benefits from a standard coating to help reduce reflections 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 and grinding it flat to a tolerance of 1/10,000th of an inch.nnn- Clear filter offers general protection of your lens from the elements.n- Standard coating to reduce lens reflections and improve light transmission.nnnSpecificationsn