The fundamentals of photography
A 1920 photography textbook by C. E. Kenneth Mees for Eastman Kodak Company, published in Rochester, New York, as an introduction to the technical fundamentals of the medium. Its pictures are diagrams and micrographs: a blurred density gradient across a band, a stepped tonal wedge drawn in hatching and solid black, a magnified grain pattern on a field, and two circular fields comparing coarse and fine graininess. A designer could draw on the stepped tonal scale and the grain textures as ready-made abstract patterns.
