Previous ed. (B54-3560), London: Pitman, 1954.
L. P. Clerc's photography: theory and practice . Completely revised and enlarged ed.; edited by D. A. Spencer. 1, Fundamentals: light, image, optics by L.-P. Clerc. ISBN 0240506847. Published by Focal in 1970. Publication and catalogue information, links to buy online and reader comments.