Originally posted by Slavek My copy of silver version arrived today - but I promised myself that I will stay strong and give the lens to myself for the Christmas.
While your moral steadfastness is admirable, you want to make sure that you haven't received a problem copy (think: decentering, no infinity focus, faulty aperture, or whatnot). Therefore, give it a close inspection and examine a minimum range of test shots. By doing that, you're not cheating on Santa but rather ensuring that your Christmas doesn't get ruined by a possible dud. At any rate, check the small print on customer returns. If your testing reveals that the copy sent to you is fine - as it likely will be - repackage and wrap it up for Christmas, knowing that a real treat is waiting for you on the occasion. Just my two irrelevant bits, of course.