Canon Lens Hood for the Canon 85mm F1.2 L, 80-200mm f2.8 L Lenses.
One of the most important accessories for each lens you own. A lens hood provides quite a few functions: it shades the lens from stray light, improving your image quality and contrast. 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. Most EF lenses have a Canon lens hood designed specifically for it.