Overview: This UV-Blocking Glass Filter is nearly colorless & blocks UV radiation up to the limit of visible light. This filter can help protect your camera lens against dust, moisture, fingerprints, scratches & damage, It also provides basic reduction of UV light. Main Features Low profile filter ring ensures no vignette Thinner high index glass for maximum lensprotection Glass rims are blacken to prevent internalreflection 20% lighter in weight as compared toconventional UV filter Inner threads for mounting lens cap oradditional filter Optics: High quality optical glass Housing: Low profile aluminum ring Mounting Diameter: 52mm to 82mm Filter Threads: Yes Specifications: Weight Approx:40g Size Approx:12 x 10 x 2