I have just sent my 100-400L off to Canon for alignment. Bought it used and the IQ is total junk as compared to images posted here from other copies. I was wondering if anyone else has had this done and how much it costs. They couldn't give me an estimate over the phone.
My on the spot recommendation, never buy used glass. Hold out for new. Think about it, the most common reason for selling a lens is cause your not happy with it. Nuff said.



