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carbon arc lights

A number of carbon processes were described before Sir Joseph Swan patented a process in 1864. Swan s was introduced the following year and found commercial success by providing the photographer with ready-made materials. His patents were bought out by the Autotype Company. The process produced a print using carbon, which made it permanent and not susceptible to fading. Carbon prints typically have a matt finish from black, grey to sepia and other tones.

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carbon arc lights

see Arc Lights
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