A manual of photo-engraving : containing practical instructions for producing photo-engraved plates in relief-line and half-tone with chapters on dry plate development and half-tone color work (1896)
Jenkins, H. (Harry), 1868- · Chicago : Inland Printer · leaf 72
w inappearing, and the details are brought up with dif-ficulty, the plate has been under-exposed. If oneportion of the image appears before another, it in-dicates uneven lighting of the copy, and when thatportion which appears first is sufficiently devel-oped, it should be held to wash under the…
Photoengraving · Color photography
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
