As its name declares, photography is a means of writing with light. Photographs both show and tell, and they speak an extraordinary range of dialects.

Beginning February 19 the Morgan Library & Museum explores the history of the medium as a lucid, literate—but not always literal—tool of persuasion in a new exhibition, Sight Reading: Photography and the Legible World. A collaboration with the George Eastman Museum of Film and Photography, the show features more than eighty works from the 1840s to the present and reveals the many ways the camera can transmit not only the outward appearance of its subject but also narratives, arguments, and ideas. The show is on view through May 30.