From AP: "... Phelps' time of 50.58 seconds was confirmed after a review down to the 10-thousandth of a second; Cavic's time was 50.59.
Chianese explained that it requires 3 kilograms (6.6 pounds) of pressure to activate the touchpad.
"Any less and waves would set it off," Chianese said. "You can't just put your fingertips on the pad, you really have to push it. We explained all this directly after the race to (Cavic) and his coach."
The photos were taken by Omega cameras placed directly above the finish line, slightly angled to include two lanes in each photo. [Link]
to the right on top do not really confirm or show me anything. The DVR and the Sports Illustrated photos were better. I am looking for a higher rez copy.