Higher Pictures inaugurates its new, larger digs with the sort of savvy, of-the-moment survey show it does so well. With few examples of “straight” photography (these look anything but) and lots of mixed-media mash-ups, the emphasis is on experimentation, manipulation, humor, and surprise. Works by Letha Wilson, Artie Vierkant, Matthew Stone, John Houck, and Sam Falls make categories like abstraction and representation seem hopelessly passé. “Photography Is” leaves such definitions wide open. The medium has never been quite so willing to embrace change; judging by the work here, this is a position of strength. Through May 26.