Through the filter thread of plastic extremely flabby attachment when the panel is placed on a filter already mounted. When light touches the panel falls off automatically. In addition, there is strong shadows and illustration of the aperture edge of the image. Not recommended, rather spend a bit more and buy a Canon original part. Is easier and faster to assemble by the bayonet. The CamRepublic® --58mm Flower Lens Hood took their way to the garbage can. Once again learned: Who buys cheap, buys twice.
