Optics Scholar Offers Discussion of Use of Projectors by Renaissance Painters

Dr. David G. Stork, Chief Scientist of Ricoh Innovations, heads up a discussion of a theory by David Hockney that painters, as far back as 1420, used projection devices to enable them to trace images onto canvas.

The FAQ includes a bibliography of published articles, including Stork's own papers, scholarly abstracts and links to other websites, many of which repudiate the claim which was originally put forth in David Hockney's work Secret Knowledge.