Hanumex 62mm Flower Lens Hood Screw Mount for Canon Nikon Sony Olympus Pentax & All Other Digital SLR Cameras Lens hood prevents extraneous & unwanted lights falling on the lens & increases sharpness, it also saves the lens from accidental bumps & knocks. The petal shape of this lens hood maximizes the amount of hood coverage for minimum amount of weight & hood area. This hood features a non-glare matte finish on the interior surface to further prevent or limit lens flare.