David Hockney: A Bigger Vision » David Hockney, Yosemite I, October 16th 2011. iPad Drawing printed on six sheets of paper (71 3/4 x 42 3/4 inches each), mounted on six sheets of Dibond, 143 1/2 x 128 1/4 inches overall. © 2013 David Hockney

David Hockney, Yosemite I, October 16th 2011. iPad Drawing printed on six sheets of paper (71 3/4 x 42 3/4 inches each), mounted on six sheets of Dibond, 143 1/2 x 128 1/4 inches overall. © 2013 David Hockney

David Hockney, Yosemite I, October 16th 2011. iPad Drawing printed on six sheets of paper (71 3/4 x 42 3/4 inches each), mounted on six sheets of Dibond, 143 1/2 x 128 1/4 inches overall. © 2013 David Hockney