JVMvW, I agree. but they are not mutually exclusive
I recently saw a photomicrographic image of a cross section of a plant stem that was dyed to illustrate the tubular cell structure and probably color enhanced to augment the illustration - is still a photograph? It sure was pretty to look at and it was scientifically correct. It was manipulated and it would look great framed and on the wall. It probably could have been used in court, in scientific presentation, and good enough to be in a gallery or a book. I vote it was a photograph because it was. But some would disagree - it's ok.