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2. Halftone - Wikipedia

   en.wikipedia.org/wiki/Halftone

   The first printed photo using a halftone in a Canadian periodical, October 30, 1869 A multicolor postcard (1899) printed from hand-made halftone plates. While there were earlier mechanical printing processes that could imitate the tone and subtle details of a photograph, most notably the Woodburytype, expense and practicality prohibited their being used in mass commercial printing that used ...

3. Guilloché - Wikipedia

   en.wikipedia.org/wiki/Guilloché

   Guilloché. Guilloché ( French: [ɡijɔʃe] ), or guilloche ( / ɡɪˈloʊʃ / ), is a decorative technique in which a very precise, intricate and repetitive pattern is mechanically engraved into an underlying material via engine turning, which uses a machine of the same name. Engine turning machines may include the rose engine lathe and also ...

4. Engraving - Wikipedia

   en.wikipedia.org/wiki/Engraving

   Engraving. St. Jerome in His Study (1514), engraving by Northern Renaissance master Albrecht Dürer. Engraving is the practice of incising a design on a hard, usually flat surface by cutting grooves into it with a burin. The result may be a decorated object in itself, as when silver, gold, steel, or glass are engraved, or may provide an ...

5. Monochrome photography - Wikipedia

   en.wikipedia.org/wiki/Monochrome_photography

   Monochrome photography is photography where each position on an image can record and show a different amount of light, but not a different hue. It includes all forms of black-and-white photography, which produce images containing shades of neutral grey ranging from black to white. [ 1] Other hues besides grey, such as sepia, cyan, blue, or ...

6. Grayscale - Wikipedia

   en.wikipedia.org/wiki/Grayscale

   Web-safe color. v. t. e. In digital photography, computer-generated imagery, and colorimetry, a greyscale (more common in Commonwealth English) or grayscale (more common in American English) image is one in which the value of each pixel is a single sample representing only an amount of light; that is, it carries only intensity information.

7. Line engraving - Wikipedia

   en.wikipedia.org/wiki/Line_engraving

   Line engraving is a term for engraved images printed on paper to be used as prints or illustrations. The term is mainly used in connection with 18th- or 19th-century commercial illustrations for magazines and books or reproductions of paintings. It is not a technical term in printmaking, and can cover a variety of techniques, giving similar ...