This happened yesterday - it is not the first time either. I need to switch the camera off and on again for it to 'recover' and become normal. I was shooting in manual mode, Auto ISO and using matrix metering. All my other images had been at 100 ISO but for that white-out frame it suddenly shot up to 900 ISO (pointing at the beach scene, as per the next picture). I knew it was going to be over-exposed, but shot the image anyway according to the camera's requested settings, just to have this as a record. Has anybody else experienced this?