Amateur film has been seen as the junkheap of private culture. Yet music videos recycle home movies as authenticity; commercials copy its style to sell intimacy; documentaries use it to recount history "from below." Reel Families is the first historical study of amateur film, the most pervasive of media. Patricia Zimmerman charts the history of this medium from 1897 to the present, examining how ideological, technical, and social constraints have...