Secret Knowledge by David Hockney

In Secret Knowledge by David Hockney, the artist "rediscovers the lost techniques of the Old Masters.
 
The book that turned the art world on its head: Hockney demonstrating how Renaissance artists used mirrors and lenses to develop perspective and chiaroscuro – radically challenging our view of how these two foundations of Western art were established.
 
David Hockney gave up two years to follow a mysterious trail, obsessively tracking down the hidden secrets of the Old Masters.
 
As news of his investigations spread, his sensational discoveries became the subject of headlines, media attention and debate amongst prominent scientists, art historians and museum directors worldwide.
 
Hundreds of paintings and drawings, including many well known, are reproduced and accompanied by Hockney's infectious and enthusiastic descriptions.
 
Secret Knowledge is not just about the Old Masters, but also how we see , treat and make images today in the age of digital manipulation.
 
First edition, hardback, published in 2001 by Thames and Hudson, in good condition.
 
296 pages, 460 illustrations, 402 in colour.
 
ISBN 0500237859