You hardly expect to turn out for an exhibition of cutting-edge photography because of what the images are of. You go for the style, for the technique, for what’s being said about the medium and the, er, beauty. Yet at least one of the nominees for this year’s Deutsche Börse Photography Prize – an event that seems to be emerging as a kind of Turner Prize for photography – belongs to the old, subject-oriented approach to the lens. A member of the legendary Magnum agency, American Jim Goldberg is a photojournalist, who travels the world looking for bad stuff – torture, refugees, human trafficking. And if he doesn’t find enough of it he doesn’t eat.