This photo shows an interesting optical aspect of photo-finish.
The German rider (back) is accelerating, which you can see because his bike looks short. The Dutch guy (front) is going slower, as he appears slightly elongated. Unfortunately for the German rider, he timed his charge too late and was unable to pip the Dutch rider at the line
James Broder
Broder's Skunkware Scoring & Timing Software
http://www.skunkware.tv
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