Customer Reviews
Well, my Macro Lens needs it!! 
2008-09-24
It's too $$$$ for a little black plastic, but I need it for my lens.
Overpriced, but genuine Canon build 
2008-06-25
Should have come with the lens, but then, the lens would simply have had a higher price, right?
Working good) 
2008-04-05
Working good but ugly looking, no indicator for assembling, really bad surface material (scratch easily)
Useful, but expensive 
2007-12-13
In addition to shading the lens from glare and preventing lens flare in your photos, a lens hood can also help protect the front element of your lens without degrading image quality (like a cheap UV filter, for example). When using on board or hot shoe flash, it may end up shading your subject from the flash.
After seeing the lens hood that came with my 24-105L, and comparing it to the one on my Tamron, I decided to go ahead, sacrifice a few lunches out, and get Canon hoods for my two other lenses. Sure, they're overpriced, but the 3rd party ones are overpriced as well even at half this price on eBay, and at least I know this one fits well.
I removed one star for the price. Otherwise it's perfect.
Pros:
Fits very well.
Inside is lined with a velvety material that will not reflect light.
Can be reverse mounted on 100mm macro for storage.
Cons:
Price.
Velvety material traps dust and dirt.
Needs to be removed to replace / remove lens cap (not really an issue with the hood - just need to get into the habit of removing cap before putting hood on).
Macro lens Hood 
2007-09-30
It's the perfect addition to my macro. It offers great protection and shade and versitality to the macro lens.
a must have accessory 
2007-07-04
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 100mm f/2.8 Macro USM.
expensive but a fine product 
2007-01-22
Yes, the lens hood is pretty expensive for what it is, you have to take in account a few things:
1) You'll take better pictures with it than without it, especially in a bright lightbox or sunny day. I've bought hoods for all my lenses now.
2) Its about the same price as a good-quality UV filter you would use on your lens to protect it while not degrading image quality (ie: not the $10 tiffen filter Amazon is hawking on this page). I personally use both the hood and a B&W UV filter.
3) The lens is almost $500 as it is. $40 isnt the end of the world, especially when you consider what the next step up for Canon macros costs.
4) The lens hood makes the lens look pretty impressive, adding 3-4" to the length. Yes, that's just my opinion, but felt I would share it. ;-)
Anyway, Genuine Canon products are usually pretty pricy, but given the poor-quality third party knockoffs I've tried (shutter release cables, etc) its worth it to just spend the extra money.
Too expensive 
2007-01-16
This lens hood is a must if you are serious about macro photography with you 100mm f/2.8. I cannot praise the lens high enough, but that is no reason why Canon should rip us off, asking $40 for a piece of cheap plastic!! Why don't they follow Nikon's example and start shipping their lenses with hoods. After all, good and pricey lenses are for people who are serious about photography, and people who are serious about photography want to have hoods on their lenses!! So Canon, stop being greedy...
I give it a rating of 1/5 simply because the quality/price ratio is terrible.
An overpriced piece of plastic. 
2006-09-28
Lets face it, it's a $35 piece of plastic. It fits the 100mm f/2.8 macro lens. If you want a hood for this lens, this is the one you need. But at $35, it's WAY overpriced.