X100B 49mm Metal Filter Adapter Ring Lens Hood Set for Fujifilm X100S X100 + Cap X100B 49mm Metal Filter Adapter Ring Lens Hood Set for Fujifilm X100S X100 + Cap Lens hood is one of the most important accessories for each lens you own. A lens hood provides multiple functions: it shades the lens from stray light, improving your contrast and image quality; in inclement weather, it can assist in keeping moisture or wind-blown debris off the lens; and it protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles. X100B 49mm Metal Filter Adapter Ring Lens Hood Set and Cleaning Cloth for Fujifilm X100/X100s