Overview: 78 photographs and 4 bound volumes were presented in this exhibition chronicling major technological developments in photographic processes from the origins of the medium until the advent of digital photography. The photographs were selected primarily from the collection of the National Gallery of Art, augmented by loans from private collections. Works on view ranged from an early photogenic drawing by William Henry Fox Talbot to Polaroid prints by Andy Warhol, and included examples of salted paper, albumen, gelatin silver, and chromogenic prints along with examples of photomechanical processes such as photogravure and halftone. Exhibition wall texts explained the technical processes.

Organization: The exhibition was organized by the National Gallery of Art. Sarah Kennel, associate curator of photographs, and Diane Waggoner, assistant curator of photographs, were curators. The exhibition was made possible by the Trellis Fund.