"Let the person looking at the photograph go some of the way to finishing it," said legendary Parisian street photographer Robert Doisneau – but how do you achieve this?

Portrait of photographer Robert Doisneau holding a camera.

Robert Doisneau (1912-1994), the iconic 20th century French street photographer, is best known for his famous humanist approach to documenting everyday Parisian moments.

In later years, though, he’s arguably become just as well known for something he said to Australian photographer and photography historian Peter Adams in 1987.