I trust the people who were actually at the autopsy over a panel of "professionals". Was Tom Robinson the mortician allowed to examine the photos?
Sorry, how would a mortician, Tom Robinson, know whether the photos were altered or not? Did he have any background in the subject? And would he remember what the photos should have looked like almost 20 years later?
According to the timeline that seems to me most accurate, he arrived with the embalming team after the autopsy began at around 11:00. Then watched it from the spectator's area before beginning the embalming. So he arrives some three hours after the autopsy began, was watching from the gallery, and can tell what the body looked like when the photos were taken? I am skeptical.
Yes, experts can be wrong. But we need to point where they are wrong and not simply dismiss them.