Harry Shunk and János Kender, outtake from the shoot for Yves Klein’s Leap into the Void.

Harry Shunk and János Kender, outtake from the shoot for Yves Klein’s Leap into the Void.

Yves Klein and the birth of the blue

Yves Klein with his signature International Klein Blue. Photograph: . Charles Wilp/BPK Berlin

"The imagination is the vehicle of sensibility. Transported by the imagination, we attain life, life itself, which is absolute art."