Traité général de photographie en noir et en couleurs
A French photography treatise by Ernest Coustet, published in Paris by Delagrave in 1921, aimed at practitioners and students of black-and-white and colour photography. Its pictures are black-and-white engraved illustrations of cameras, lenses, and laboratory apparatus, including a microphotographic setup and a shutter with lens mounts, drawn with dense cross-hatching and crisp outlines a designer could use for vintage technical diagrams.
