The process or technique of creating ferrotype photographs on iron plates coated with enamel.
Present participle of 'ferrotype' as a verb. The technique was perfected in the 1850s and became widespread during the American Civil War.
Ferrotyping was actually faster and cheaper than earlier methods like daguerreotypes—you could get a ferrotype portrait made in minutes for just a few cents, which is why they became so incredibly popular with ordinary people in the 1860s.
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