Hi all I took a photo yesterday with my OMD EM-5. The subject was back lit in the shade with the small pop up flash for fill flash. The photo appeared underexposed in the LCD, so I checked settings and took another. Still underexposed in the LCD. Later at home, I replaced the battery and was surprised to see both photos showing perfectly exposed on the LCD. I had not changed any settings in between! What causes this dramatic change in viewing in the LCD? Thanks for any suggestions.