Adorama Dedicated Lens Hood for Canon EF-S 17-85mm IS USM Lens (EW-73B)

Petal Shape Dedicated Lens Hood - Designed to match the specific focal length of the lens it is intended for

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.
Brand: Adorama, Model: EW-73B