David Hockney. My Window

'For me, it's really the joy of looking out into the world and getting this positive energy... It's opening up our vision, and how we look.—David HockneyWhen David Hockney discovered the iPhone as an artistic medium, it opened up entirely new possibilities for his art. He made his first digital paintings in spring 2009, describing the morning landscape in broad lines and dazzling colors directly on a display that offered subtle hues as unmixed expressions of pure light. Then in 2010, Hockne...