canon lens hoods are one of the most important accessories for each lens you own. a lens hood provides multiple functions: it shades 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; and it protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles. almost all ef and ts-e lenses have a canon lens hood engineered specifically for it. parallel imported warranty: warranty one year delivery within 2-4 business days