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Paget process
The Paget process was an early colour photography process patented in Britain in 1912 by G.S. Whitfield and first marketed by the Paget Prize Plate Company in 1913. A paper-based Paget process was also briefly sold. Both were discontinued in the early 1920s. One of the most outstanding exponents of the Paget process was Australian photographer Frank Hurley.
==Photography==
The system used two glass plates, one of which was the colour screen plate while the other was a standard black-and-white negative plate. The colour screen plate comprised a series of red, green and blue filters, laid down in a regular pattern of lines to form a ''réseau'', or matrix. Because the negatives of the time required long exposure times, the colours in the screen plate were diluted to let more light through to the negative, resulting in a quicker exposure. A viewing screen with more intense colour filters was used in combination with the developed positive to project a composite colour image.
The colour screen plate was usually sold as a separate item to the panchromatic negatives. A single colour screen plate could be placed into the camera and used to expose many negatives in succession. The resultant negatives looked like standard black-and-white negatives, with a noticeable crosshatch patterning in areas of strong colour.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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