Have you experimented with the camera's metering system yet? ('spot/center w average' etc) This is especially important wen working with contrasting backgrounds.
You also havent mentioned if you shoot in RAW (or not) which is an equally important factor as almost all of the time shooting in RAW will mean the difference between recovery of (any) overblown highlights or not. It has been mentioned by other users allready multiple times and it is sound advice.
Perhaps 'nzmacro' (Danny) can chime in as he has tons of expertise with the mft system, bif, and manual everything.