Lens hood is 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.
Compatible With Canon EF 135mm f/2L USM, EF 180mm f/3.5L Macro USM
Blocks stray light from entering the lens and protects lens from scratches
Extra protection from accidental impact
No vignetting will be caused with the hood on