This post comes late, but there are still a few more days left to check out the “Japan: Self Portait” exhibit at the Setagaya Art Museum. The exhibit is a survey of postwar Japanese photography. Here’s the link to the Tokyo Art Beat entry, which includes all the information you’d need to make it out. (I suggest a bike ride to the park, if possible.)
Apart from the pleasure of walking through many comfortably large rooms of black and white photographs, I enjoyed thinking about different contexts for viewing a photograph. Some of these pictures could have been tossed off by the photographer, without much thought towards history, but now we might read something much different in them.
Whether you can make it to the show or not, the interview with curator and blogger Marc Feustel at Japan Exposures about this exhibit is worth reading, for an inside perspective on Japanese photography.