Legendary painter David Hockney has spent a lifetime creating and thinking about art. Now he reflects on the depth of its history in a new book called: "A History of Pictures: From the Cave to the Computer Screen."
...Light, and where it comes from, is every painter's preoccupation. And for Hockney, light on water is a particular fascination. "Say a swimming pool: The water is transparent. How do you paint transparency?" he asks. "It's always a nice problem to me. ... Water in a swimming pool is transparent and it has reflections and things. That's what [it's] all about — reflections."