New York Times -August 26th 2004 - Computer People Reopen Art History Dispute -Sarah Boxer

The scientists' final test of Mr. Hockney's theory was to have a realist painter render a chandelier as accurately as he could merely by eyeballing it. They enlisted a British realist painter, Nicholas Williams, who painted a chandelier that wasn't perfect but was more accurate than van Eyck's.

"This experiment confirms that realistic-looking structures can be painted merely by eye, without the help of optical tools of any sort," the scientists wrote.