I covered an event at the weekend, using two cameras. I've sorted out the files to get the keepers. Now I've got two folders, one with, e.g. DSC_150-350.jpg, and the other, e.g. DSC_2200-2400.jpg. Obviously, the chronological order of the shots is split across the two folders. Is there any logical way (that I cannot think of!) to organize, and rename/renumber the files?