SFMOMA’s still-new Pritzker Center for Photography focuses on Japan in two exhibitions that present new work by Sohei Nishino and explore the history of postwar Japanese photography. “Japanese Photography from Postwar to Now,” on view until March 12, includes major figures such as Shomei Tomatsu and Daido Moriyama, who investigated Americanization and industrial growth, as well as more personal and performative work by Nobuyoshi Araki and Eikoh Hosoe. The show also features women such as Miyako Ishiuchi, Rinko Kawauchi and Lieko Shiga who emerged as significant contributors to contemporary Japanese photography. “New Work: Sohei Nishino,” which opens November 4 and runs until February 26, features the artist’s signature collaged maps, made from hundreds of photographs that Nishino takes of the streets and landmarks of a particular city. After printing his contact sheets, he cuts out individual frames and combines them into large-scale images that function as both traces of memory and subjective maps. The show includes Nishino’s version of San Francisco, made especially for the exhibition.