This lens hood maximizes the amount of hood coverage for the minimum amount of weight and hood area because of its "petal" shape. This dedicated lens hood is specifically designed to match the exact focal length of the lens it was designed for. The main function of the lens hood is to shade the lens from stray light， improving your contrast and image quality. But it will also protects the front barrel from the inevitable impacts against walls， door frames， and other real-life obstacles and in inclement weather， it can assist in keeping moisture or wind-blown debris off the lens.                                    Features            New and high quality<br>Design for Canon lens， same function as EW-83E<br>Lens hoods block side glare and augment the protection provided by filters to the lens surface and ring<br>The bayonet mount design makes it firmly on the lens<br>                                                            Specifications                        Dimensions          4.72 x 4.33 x 1.89 in (L x W x H)        <br>          Weight          1.16 oz        <br>          Color          Black        <br>                                                              Package Includes            1 x EW-83E Lens Hood for Canon<br>