Fotasy 37mm Silver Tilted Curved Metal Screw-in Lens Hood Shade for Olympus M.ZUIKO DIGITAL 45mm 1:1.8 lens The 37mm silver curved screw-in metal lens hood fits Olympus M.ZUIKO DIGITAL 45mm 1:1.8 lens Made of METAL, stylish and functional (the original OM LH_40B is made of plastic) Prevents glare and lens flare, but also provides an extra protection to your lens. The Professional Lens Hood is primarily designed to prevent unwanted stray light from entering the lens. Pls note the shape of the lens is different to OLYMPUS Plastic Lens Hood LH-40B