One of the most important accessories for each lens you own. A lens hood will provide multiple functions: it shades the lens from stray light, and improving your contrast and image quality; in inclement weather, the lens hood could assist in keeping moisture or wind-blown debris off the lens; and it can protect the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles.  
The Lens Hood is the professional camera lens hood for you. The 67mm Lens Hood is designed to prevent glare by stopping light from coming into the lens at side angles. The main function of the camera lens hood is to shade the lens from stray light, improving your contrast and image quality.
Camera Lens Hood protects lens from scratches and impacts. Added benefit of extra protection from accidental impact. It is really a must have for you.