55 mm UV filter for protecting your front camera lens from bumpes, scratches, dirt and water damage Absorbs ultraviolet rays protecting the front lens due to a double anti reflective coating on both the front and the back of the filter Filter thread: 55 mm, no vignetting and distortions when taking wide-angle shots due to thin (3.4 mm) ring frame. Easy attachment of additional filters, lens hood or lens cap thanks to double screw thread High-quality lens glass: Glass lens multi-coated on each side (two coats on each side) with black metal ring frame, scratch-resistant and translucent Quality standard (glass): high-quality lens which produces clear, sharp photos, reduces haze and prevents fuzziness