Conte, who is sixty, has a thin mustache and wears small wire-frame glasses that give him the appearance of a barrel-chested laboratory chemist.

NEWYORKER: King of Walks

Mr Vlahos's breakthrough was to create a complicated laboratory process which involved separating the blue, green and red parts of each frame before combining them back together in a certain order.

BBC: Blue and green-screen effects pioneer Petro Vlahos dies