Product Description

Hoods are 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.This hood is compatible with EF 100-400mm f/4.5-5.6L IS USM.

Product Details

• Brand: Canon
• Model: 2707A002
• Dimensions: 3.90" h x 4.80" w x 4.90" l, .30 pounds

Features

• Designed to prevent unwanted stray light from entering the lens
• Ensures no problems with vignetting or motor functions
• Added benefit of extra protection from accidental impact
• Compatible with EF 100 to 400mm f4.5 to f5.6L IS USM lens

Amazon.com Product Description
Lens hoods are primarily designed to prevent unwanted stray light from entering by extending and shading the end of the lens, ensuring no problems with vignetting or motor functions. Additionally, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. Lens hoods match the specific focal length of the lens it was designed for.

This lens hood fits the following Canon lens:

• EF 100 to 400mm f4.5-5.6L IS USM

Customer Reviews

Improves contrast and image quality
Hoods offer several benefits to the photographer. Primarily the hood shades the lens from stray light that may result in an unwanted discoloration or hazing of the image, or the appearance of lens flare. Shading your lens helps improve contrast and image quality. A hood is not required to eliminate these problems, as any item used to shade the lens will provide the same protection from stray light. The hood is convenient in that it is built to offer protection while ensuring that it will not inadvertently find its way into your image.

Photographers often state the protective abilities of a hood as a reason to have one. This hood being a solid conical three and three quarters inch long offers some protection from keeping moisture and wind blown debris off the from lens element. There is nothing more irritating than reviewing your images to find dust spots or other flaws. When in place, the hood can protect the lens from impacting solid objects. Replacing a damaged hood is usually cheaper than repairing an expensive L lens.

This hood is manufactured for the Canon EF 100-400mm f/4.5-5.6L zoom and normally comes included with the lens when sold new. There is no need to buy one with the lens as Amazon often suggests.

Since the hood is wider than the lens; it can easily be stored attached in a reverse position. This doesn't add to the length of the lens, but does make it wider by about an inch. An inch may not seem like a lot, but in a tightly packed camera bag, it is huge. Fortunately Canon provides a storage case with the lens that can be used in addition to your camera bag.

While the protective benefits exist, they are secondary and limited. I find the impact the hood has on my image quality to be the more convincing reason to use a hood. Considering the impact on image quality and the low cost as compared to my other camera equipment (except for a lens case), purchasing a hood is money well spent.

PROS:
Improves contrast and image quality
Offers limited protection to the lens

CONS:
Takes up more space in your camera bag to store with the lens

100-400mm lens hood
Lens did not come with hood. Does not have the dots to line it up, when putting it on, like most Canon products. You would think Canon would INCLUDE it with the lens, when you pay that kind of money.

Good but a rip-off
Does what it is supposed to do, but paying $38 for a piece of plastic that probably costs 50 cents to produce is crazy.