Pro Optic Dedicated Lens Hood for Canon EF 85/1.8, EF 100/2, EF 135/2.8 SF, EF 100-300/4.5-5.6 USM, EF 70-210/3.5-4.5 USM (ET-65 III)
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.