The Daily Telegraph - Tuesday July 29, 2003 -
Optical allusions - Sebastian Smee
...Stork, therefore, performs various perspective analyses on the chandelier, basically by extending lines from the image to see if they meet at the horizon. Since they don’t, he concludes that the chandelier is not in perfect perspective at all. He even gets a contemporary British painter, Nicholas Williams, to paint a (simpler) chandelier "by eye" alone, and, finding that it is in perfect perspective, concludes "that a skilful artist does not need projections to achieve excellent perspective".