RainbowImaging 46MM metal screw in lens hood for Wide Angle lens (fits 24mm, 28mm, 35mm lens) This 46MM wide angle metal lens hood provide extra strength to the lens Designed to prevent unwanted stray light from entering the lens. Added benefit of extra protection from accidental impact, improve image quality Fits LEICA SUMMICRON-M 28 mm f/2 ASPH, Carl Zeiss Biogon T* 2,8/28 ZM, Carl Zeiss Biogon T* 2,8/25 ZM, Voigtlander Ultron 28mm f/2.0, And compatible to other wide angle lenses with 46MM filter thread size