OK, so I'm going to be shooting two hours today at the Chicago Art Institute, and admission happens to be free. I thought they wouldn't let you shoot, but as long as you do all stills, use no flash or tripod, and only shoot permanent collections, you're OK. They do make you check large bags, and I'm not sure if I'll have to check my camera bad. If I do, I'm wondering if I should take my 28-200mm f/4-5.6 or 18-55 f/3.5-5.6? FWIW, the 28-200 is actually not that big and bulky, so I don't mind lugging it.