First off, I dont have a bad copy of any lens (yet). I am looking at buying\na few different lenses which are synonymous with "bad copies".\n\nI typically buy my gear from B&H (and I dont live in NY), so I am buying\nonline. So, lets say I buy a Canon 24-70 f2.8L and it turns out to be a "bad\ncopy". What do I do? Do I try to return it to B&H and pay for shipping or do\nI deal with Canon?\n\nHow does the whole "bad coy" thing work?\n\nThanks\nMusty.