Framing the Evidence

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Science  21 Dec 2001:
Vol. 294, Issue 5551, pp. 2486
DOI: 10.1126/science.1067707

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Secret Knowledge Rediscovering the Lost Techniques of the Old Masters. David Hockney. Thames and Hudson, London, 2001. 296 pp. £35, ISBN 0-500-23785-9. Viking Studio, New York. $60, C$87. ISBN 0-670-03026-0.

Hockney marshals visual and textual evidence for his claim that pictures became far more realistic in the 15th century because major artists used lenses and mirrors to project images onto paper or canvas.