Here is a picture I took messing about with my odds and ends. These are the keys on my cell phone. Distance was about 2 inches. Overhead flourescent light and handheld at f1.8 Sorry about the quality of this one, only other camera I had available was my phone. E-P1, lens is a Zuiko OM 50mm 1.8. Extension tube is a Vivitar 3x teleconverter with the innards removed.