But in the latter half of the 20th century, the photograph provided more direct inspiration. It became the subject of the work itself: artists such as Andy Warhol and Gerhard Richter, both of whom kick off this exhibition, reproduced photographic images in ways which provoked questions beyond the merely aesthetic. Warhol's serial image of a car crash is repeated like a photobooth print, so, paradoxically, the horror is intensified by the banality of its representation.