I have two pro shoots scheduled for this week that I had planned on using my 5DmkII + radio triggers for flashes for. BUT! Since my OM-D came in I thought I'd see how the tiny flash unit does for controlling remote flashes. The answer? FANTASTIC! I'll take the MkII & radio triggers, but those will be backup. These shoots will be all E-M5. Here's some test shots featuring my kids as models against the big picture window- two umbrella setup, FL-50R for the big kick and an FL-36R for fill. The EM-5 controlled both beautifully. It is very Apple-like how well Olympus gear works together (that's a major compliment, BTW). I will probably add one more flash for background later, but I have complete confidence the E-M5 will have no trouble with it. I have never felt more confident in a new camera than I do this one.