My explanations both for art and for photography are very simple:
Taking photographs is basically like falling in love. You look around a little bit, checking things out from different perspectives, or maybe you’re not actively looking around at all. The point is: at some point it hits you. You fall in love…with some particular subject matter and everything outside of this frame becomes more or less completely insignificant as a result.
Art, on the other hand, is bound to the creation of unresolvable fields of tension: when, for instance, an artist is working with the medium of photography, the almost natural field of tension to create is between the particular and the universal or between the fragment and the whole. One interesting place to look at in this light is the parliament and its plenary hall, precisely because it is a particular, finite place that is supposed to stand for (or represent) something general, the nation.