Suitable for

• EF 17–40mm f/4L USM
• EF-S 10–22mm f/3.5–4.5 USM

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
• It protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles.