Thank you all for the valuable suggestions,one quick question, though a little out of context from this thread, Iam planning to get the lens from adorama website.There are two options http://www.adorama.com/CA702002ISU.html and http://www.adorama.com/CA702002ISUK.html . The second one , I am getting two extra filters for the same price of the first one. Do you see anything foul with the lens I will be getting if I get the one with filters, may an old one? Any thoughts?