NOTES SUR LA THÉORIE DES OBTURATEURS PHOTOGRAPHIQUES:
Paris: Gauthier-Villars, 1905. First ed. 8vo., ix, 79 pp., illustrated with diagrams. Printed paper wrappers with a small rubbed spot on the front. A very good copy and unopened. This manual provides a theory of shutters and a mathematical analysis of their function. OCLC only locates a single copy at..... More