Two exhibitions by Japanese artists raise deep questions about the medium, and — refreshingly — leave them hanging. : Two exhibitions by Japanese artists raise deep questions about the medium, and — refreshingly — leave them hanging. There’s more than one answer to the question “What is photography?,” and this fall in London, there is a dazzling array of possibilities on show in retrospectives of the Japanese artists Hiroshi Sugimoto and Daido Moriyama. Born 10 years apart (Moriyama in 1938, in Osaka, and Sugimoto in 1948, in Tokyo), both photographers came of age in Japan’s postwar photography boom.