Dear gurus I am suddenly having this problem with my nikon d3100. I took photos last night n those were ok but tonight its taking photos with half top dim( almost black ). Problem occurs only on flash n fotos are fine when taken without flash. Im using auto mode. I found a similar thread on this forum of 2011 but no solution was posted so i thought to ask here myself. Thanks PS: i hv tried formatting memory card n restetting shoot options.