Materials & Techniques
Gelatin silver print
The primary black-and-white process since the late 1880s, gelatin silver prints involve three layers: paper, baryta, and gelatin. The paper is prepared with a layer of baryta, or barium sulfate. The gelatin layer is an emulsion of light-sensitive silver compounds that captures the image after the exposure and development of the negative. Gelatin silver prints are characterized by a smooth and even surface.
Gallery text from Irving Penn: Beyond Beauty as drawn from the Irving Penn Archive at the Art Institute of Chicago.