Kinda of going on what Mark said, I think he is right about the room. After thinking about this, one thing that might make an interesting comp is to allow the monks and surrounding area to become a bit underexposed and direct your light just on the artwork---maybe with a homemade snoot on your flash. Since you have the triggers, You may even use an assistant to bring your flash in from a different direction and at a higher angle with reduced power. I think the dark "monestary" like mood might do this shot some real justice.


Good luck, and I look forward to seeing the finished product.


Bob