There are over 100 photographs in this exhibit and nearly 150 in the accompanying book, which bears the initially baffling title W. ou L’oeil d’un long-nez (W. or the eye of a long-nose). The scale of this show somehow befits the ostensible subject: the Chinese diaspora. Patrick Zachmann, a member of the Magnum photo agency, spent eight years exploring Chinese communities from his native Paris to the Golden Triangle, by way of New York and San Francisco, Hanoi and Hong Kong, Singapore, Manila, Tahiti, and elsewhere (including a fortuitous visit to Tiananmen Square in May of 1989).

The wealth of