I hope someboday can help me, I just joined CPS as a Gold Member and would like to "play with" the TS-E 17mm, if I find it matches my style, I may break the bank for it. In any event, what is the procedure one goes through to request a lens? The CPS website says you can borrow for "a week or two", how long do you typically use a borrowed lens? Do they take your credit card number as security against you damaging/losing the lens? And, finally, is it OK to borrow a lens that you have no intention of ever purchasing (say the 600 f/4)?