does anyone know what the faint split screen image preview is when your looking at an underexposed shot off the lcd is? i cant find anything in the manual about it... you shoot a shot at a hi iso, underexposed, and the preview image comes up on the back and then a moment later the right half of the lcd image goes a little darker, like its noise reduction or something? anyways sorry for the nooby question, but i just one for christmas, so stoked!