When you’re going to photograph the Surrealist painter, Salvador Dali, you don’t just say “Cheese”.  Phillipe Halsman collaborated for decades with the painter – and his daughter recalls how their most famous collaboration was made:

To get the right mix, there were 26 attempts.  I can’t help wondering whether it was not rather more difficult to capture the cats for take 26 than take number one….

The whole premise of the photo was to shoot everything as in the age of the Atom – in constant suspension and movement.  Perhaps an interesting challenge for photography – a still portrait of movement.