This lens hood maximizes the amount of hood coverage for the minimum amount of weight and hood area because of its shape. The main function of the lens hood is to shade the lens from stray light， improving your contrast and image quality. In inclement weather， it can assist in keeping moisture or wind-blown debris off the lens. If you are not willing to pay the exorbitant prices for the original equipment， here is your chance!                                    Features                Designed for 10cm camera filter thread lenses<br>    Protect the lense against unwanted light flares， impact， dust and particles etc<br>    Convenience to carry for outdoor photographing<br>    The bayonet mount design makes it firmly on the lens<br>                                                            Specifications                        Dimensions     Maximum Outside Diameter: 3.94 inch / 10 cm<br>Minimum Diameter: 3.07 inch / 7.8 cm<br>High: 1.77 inch / 4.5 cm    <br>          Weight     0.78 oz / 22 g    <br>          Material     Plastic    <br>          Color     Black    <br>          Hood Shape     Bayonet mount    <br>          Compatibility     HB-25    <br>                                                             Package Includes                1 x Bayonet Mount Camera Lens Hood for HB-25<br>