This K&F Concept UV Filters protect your lens from with it’s anti-reflective purple coating, filter ultraviolet light and effectively reduce filter surface reflection, substantially improve light transmittance and color balance. Win polishing lens, yet photos retain clear when shot by telephoto lens. K&F UV filter made with imported glass for 99% transmittance. It is a cost effective solution for protecting your digital camera lens against dust, moisture, fingerprints, scratches and damage. This filter can be kept on your camera lens at all times. Super slim and lightweight aluminum frame, maximum reduce impact on light and effectively avoid dark corner for wide-angle shooting.