Premium Brass FrameCrafted from durable brass and finished with a smooth black electrophoretic coating for long-lasting reliability and a sophisticated look.Optical GlassFeatures high-transmission Schott B270 optical glass known for its clarity and hardness.Ultra High Light TransmissionAchieves up to 99.8% transmission for vivid, sharp, and true-to-life images.Advanced Coating Equipped with 18-layer nano-coating on both sides to repel water, oil, and fingerprints.Perfect FitFully compatible with the original Leica Q lens hood, no adjustments needed.