Canon EW-73B Lens Hood + 67mm UV Filter, For Canon 18-135mm IS and Canon 17-85mm IS Lenses
The Canon EW-73B Lens Hood is designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact.The "petal" shape of this lens hood maximizes the amount of hood coverage for the minimum amount of weight and hood area. This dedicated lens hood is designed to match the specific focal length of the lens it was designed for.------------------------------------------------The 67mm Ultraviolet (UV) Glass Filter is a wise initial investments. It can help protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs.Provides additional benefits of correction for Ultraviolet(UV) light which can register on film and videotape as a bluish cast and can obscure distant detailsIf desired they can be left on the lens at all times for protectionUltraviolet filters allow you to correct for the UV effect to varying degrees