The film is about photographer Elsa Dorfman, who is known for her use of the large-format Polaroid 20" x 24" camera. According to the description on the New York film festival site:

Errol Morris's surprising new film is simplicity itself: a visit to the Cambridge, Massachusetts studio of his friend, the 20x24 Polaroid portrait photographer Elsa Dorfman, who specifies on her website that she likes her subjects "to wear clothes (and to bring toys, skis, books, tennis racquets, musical instruments, and particularly pets...)." As this charming, articulate, and calmly uncompromising woman takes us through her fifty-plus years of remarkable but fragile images of paying customers, commissioned subjects, family, and close friends (including the poet Allen Ginsberg), the sense of time passing grows more and more acute. This is a masterful film.