In 1932, seven San Francisco-based photographers, including Ansel Adams and Edward Weston, banded together to form Group f/64, named for the smallest aperture on a large-format camera, the setting that yielded the greatest depth of field. Alma Lavenson was among those invited to participate in the group’s first exhibition that November—a show that heralded a new aesthetic of sharply focused, carefully composed images, often contact-printed on glossy gelatin-silver paper for maximum clarity.