JJC Ultra-thin F-MUCV Filter is a general use, clear filter that helps to absorb ultraviolet light. The filters also helps to reduce dust aand moisture from reaching your lens element. The filter is useful as a general protective filter to leave on lenses at all times. No additional coloration or contrast is provided, allowing you to pair this filter with others. In adidion, hardness of the filters is up to 9H, which provides additional protection in case of drops or situations where scratching could occur. JJC F-MCUV filters are multi-coated for reducing flare, ghosting, and reflections on the filter surface. As a result, a higher light transmission of approximately 99.5% is possible, providing you with additional contrast and high color fidelity. The filters are constructed from optical glass and a precision milled aluminum frame. The frame with a matte finish on the surface is made of aviation aluminum, ultra-think and corrosion-resistant.