I've owned this lens for just over a year. A FANTASTIC lens, read the reviews. It's considered one of the best lenses Canon makes. Image quality it superb, spot on. The advantage to this over the 2.8L is size and weight. No problem walking around with it for hours. I'm selling because I'm upgrading to the IS version, NO other reason. I loved it so much I thought I'd step it up a notch. There is absolutely nothings wrong mechanically with this lens, everything is in perfect working order. ALL caps included as well as a felt pouch not pictured. The only cosmetic defect is this tiny scuff as pictured below. The glass is pristine, might as well be brand new out of the box. Amazon has this lens for $660 right now. I'm only interested in talking to people who are INTERESTED in the lens. If the ad is posted, it's available... so don't email me asking if it's still available. I WILL NOT respond to e-mails without a name and phone number. This is an L series piece of glass. I take excellent care of my equipment. Never dropped, kicked, or otherwise. You WON'T find a cleaner piece of glass, except of course on a brand new lens. Location: Provo, Ut it's NOT ok to contact this poster with services or other commercial interests utah