As I stated in my review of the 28-135mm IS USM lens, this Lens Hood is a must. Surprising, the quality of the hood surpasses its relatively inexpensive price.The interior felt tended to pick/up some unwanted debris, but I found a good Oral B tooth brush (no floss needed) to fix the problems. Hey, we live in a filthy world!The only real negative I will mention: not one Camera store in NYC stocks the Lens Hood. There I was with a piece of cardboard in my hand trying to block out the sun - looked real Photo 101. I recommend getting the Lens Hood if you plan on purchasing the 28-135mm while on vacation, etc.