In this photo taken Thursday, Oct. 24, 2013, David Hockney gestures while explaining how he used an iPad to paint at an exhibit opening in San Francisco. A sweeping new exhibit of Hockney’s work, ... more 
In this photo taken Thursday, Oct. 24, 2013, David Hockney gestures while explaining how he used an iPad to paint at an exhibit opening in San Francisco. A sweeping new exhibit of Hockney’s work, including about 150 iPad images, has opened in the deYoung Museum in Golden Gate Park, just a short trip for Silicon Valley techies who created both the hardware and software for this magnificent reinvention of fingerpainting. (AP Photo/Eric Risberg) less 
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Associated Press | Photo By Eric Risberg
Sun, Oct 27, 2013 7:49 PM EDT