フェロタイプ

noun

ferrotype

A photographic process using a thin iron plate coated with a dark lacquer or enamel, producing a direct positive image. Also refers to the resulting photograph. Technical term in photography.

• 19世せい紀きには、フェロタイプが肖しょう像ぞう写しゃ真しんの普ふ及きゅうに貢こう献けんした。

  In the 19th century, the ferrotype contributed to the spread of portrait photography.