What you bump into when you stand back from a photograph » Yves Klein’s Leap into the Void, 1960. Gelatin silver print (photograph by Harry Shunk and János Kender), 13-11/16 x 10-7/8 inches. The Museum of Modern Art, New York. David H. McAlpin Fund

Yves Klein's Leap into the Void, 1960. Gelatin silver print (photograph by Harry Shunk and János Kender), 13-11/16 x 10-7/8 inches. The Museum of Modern Art, New York. David H. McAlpin Fund