Sarah Greenough, senior curator, department of photographs, National Gallery of Art, Washington, and photographer Robert Bergman. Using a handheld 35mm camera and available light, American photographer Robert Bergman spent nearly a decade making a series of large color portraits that address not only his subjects' physical presence but also their psychic state. On the occasion of Bergman's first solo exhibition, Greenough talks to the artist about his exceptional ability to reveal the common humanity of each of his subjects.