Today I was out shooting some photos. When I put the camera on the manual setting and clicked it seemed like a long exposure and came up with a white screen. In auto and Foliage settings the photos were fine. There was nothing on the histogram and in the data it showed CM ISO 400, 1" AWB 0.12 MB, 2816 x 2112. This is the first time this has happened. Could someone please tell me if I might have inadvertantly got the camera on the wrong setting. Thank you. I am trying my best to learn the features of this camera - but...