My Sony a390 just started taking blank pictures. Why?
I can review previously taken pictures on SD card but any new ones I take are black. When I review them, they are still black.
I have had the same problem a number of times. You may need to reset your camera to factory settings. To be on the safe side remove your memory card first. You may also want to just change memory cards, I keep extras on hand because I'm not sure of how many pictures they hold.