CPN has published a great story regarding Reuters' photographer Kai Pfaffenbach who was able to prove a violation was incorrectly called against David Storl's Gold-winning throw by showing referees a burst of images captured by his camera.
From Canon Professional Network:
"Images shot by Reuters’ photographer Kai Pfaffenbach changed the course of sports history at the recent IAAF World Championships in Moscow as they proved that Germany’s David Storl did not foul during the Men’s Shot Put Final, thus directly securing the gold medal for Storl."
Read the entire fascinating article at CPN.