over the weekend I was taking some photographs with my camera, and when I looked back on them, (they were taken indoors with lights on) wherever a light was in the image, the photograph was flashing black. what is this please? is there something wrong with my camera. when I zoom in the flashing stops. its an image and nothing like this has ever happned before. I changed settings, even reset the camera, but if there is a light or a particular bright white on the image (a wedding dress in some instances, it was blinking a black splodge on my screen.