A woman stares straight out from a white wall, and refuses to look away. Patti Smith stands in a men's white dress shirt, a thin black ribbon knotted at her throat, a dark jacket slung over one shoulder and held there by a single hooked finger. Her body is turned slightly from the camera, but her face is aimed forward, and her gaze meets the lens with an intensity that is neither inviting nor hostile, simply and absolutely present.

There are no props, no set, no atmosphere, only Smith and the field of light she occupies. The whiteness of the shirt reads like a charcoal ground against which her angular features and dark hair register with a drawing's clarity. It is a portrait stripped to a single confrontation between a person and a viewer.

The photograph was made in 1975 by Robert Mapplethorpe for the cover of Horses, and it would become one of the images that announced his arrival. Executives at her label hated it and wanted it fixed. Smith would not let them touch a hair of it. What she guarded, and why the picture still stops the eye half a century on, begins with how every element in the frame was chosen.