The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States (1895)
Farquhar, H. D. (Harry D.), Eder, Josef Maria, 1855-1944 · London : Dawbard & Ward · leaf 83
ure to bring them out, the high lights will have spread so much as to cause them to fill up and blur. The greatest trouble, how- ever, is when sufficient exposure is not given. A good, full exposure is necessary to make a first-class negative, and to get all details. If black spots present…
Photoengraving
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
