Hi, I have the Olympus EPM-1 and was having issues with the audio. In fact after talking to Olympus and a few of you in this forum I realized that it was the auto-focus on the camera that was causing a fluttering sound to be picked up in audio while I was shooting video in relatively low light. Since then I have bought the SEMA-1 external mic and while there is a better audio so far I can not turn the internal mic off to avoid that sound or to avoid the extreme sensitivity to wind that the mic on the EPM-1 has. I have gone through the settings on the camera and I feel as if I am missing something. Can someone please confirm that I can or can not turn the internal mic off? Thanks!