8 Mai 1873 Jahr - Photogravure is a photographic technique used with aquatint. The metal plate is heated and dusted with a fine rosin for an aquatint ground. In a darkroom, the image is exposed from a photo positive transparency onto a sensitised gravure carbon tissue or film. This image, in turn, is transferred to the metal plate.
Zugefügt zum Band der Zeit:
Datum:
8 Mai 1873 Jahr
Jetzt
~ 151 years ago
