R rhauver New to Mu-43 Joined May 19, 2014 Messages 1 May 19, 2014 #1 Will the Vivitar DF-383-NIK flash work on my Olympus E-M5? I've used it and it does flash, but I'm not sure the TTL function works with the camera. I had used the Vivitar on my Nikon that I sold. Thanks. for your help.