I'm considering buying a EF-S 10-22mm F/3.5-4.5 USM lens off someone. He wants $575 and is the second owner. I've seen a few shots from it and they seem ok. I asked him for a lens code and he says it doesn't have one, but he can provide me with a serial number. Will that do me any good? Will it tell me anything? Grey market? Year?
Where can I look up a Canon lens serial number?
Thanks,
Tony




