Just did some googling and I found several unofficial lens reviews comparing v1 to v2 of the 70-200 f2.8 and they were all saying that the v2 is noticeably sharper than v1. Is that considered true around here? I will be upgrading my f4 non-IS soon and I'm trying to make the decision between v1 and v2, trying to decide if the upgrade will be worth it for me or not.


