Using a lens hood improves your image quality and the contrast in your photographs. The reason it works is it concentrates the light viewed by the camera lens to what it's photographing, instead of all light everywhere around the lens. This hood is made of strong plastic, it is very tough and durable. The petal shape screws on the lens and is suitable for any focal length lens. This hood is compatible with any digital camera with a 67mm front ring. BRAND NEW.