Sat Jul 14, 2012 8:24 am
I've shot quite a few in the back ground and Art galleries have given me the OK, even asked me to include painting etc! Whether any individual Artist(s) might later take exception to it - no way of being sure. Many will and do insist either that you do NOT photograph or that you give theme a heartly CREDIT. Since you are asking about Art on public display, and you can't be expected to ask for a property release or anything / and you can assume that (where photography is allowed) it has likely been snapped before...
I would shoot, give it a CREDIT and then it's a Win -Win.