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 142
ore easilypermeable, and to increase the affinity of thereducing agent for oxygen, thus increasing itsreductive powers, causing the reduction to takeplace in the parts least affected by light beforegreat density has been obtained in the high lights.Detail is therefore obtained in the middle… … ZINC ETCHING —BLACK AND WHITE EFFECT.Drawn b}- John Sloan. MANUAL OF PHOTOENGRAVING. 97 of alkali, yet not sufficient to cause fog-, the detailswill develop too rapidly and be so strong- when theproper density in the high lights has been reached,that the negative will be too flat and wanting…
Photoengraving · Color photography
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