古典顯影 / 重鉻酸膠質顯影

  • 課程簡​介/intro​
  • ​選課須知/notices
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 Anna Yun-Ching Han, House, Gum Bichromate - layer of 4, ​2016
重鉻酸膠質顯影（初階班 / 進階班）
Gum Bichromate (Starter / Advanced )

授課導師：Anna 韓筠青

重鉻酸膠質顯影法可以印出一張「彩色」的古典顯影照片。

只要將水彩加進感光乳劑裡，再一層一層分別曝光與顯影，就可以堆疊出一張如畫般的彩色照片。每一層顏色顯影時需靜置水中約一小時，並且會因水彩廠牌不同而影響色彩附著力，是古典顯影中成功機率最低的一種顯影方法。

Gum Bichromate is a multi-layer printing process, and any color can be used in this process. You can produce a color photograph by adding different layers, such as CMYK. Chemicals are extremely sensitive in Gum Bichromate process, and each color layer takes over an hour for developing and washing.  As a result, this is a labor-intensive work and requires patience. 
  1. 本課程需俱備基本古典顯影印製經驗 (如氰顯影、凡戴克棕)。
  2. 此顯影方式成功率不高，具耐心與毅力方能成功。
  3. 課程中禁止錄音、錄影與攝影以尊重講者著作權。
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  1. Some experience n historical processes is required for this workshop, e.g., Cyanotype or Van Dyke Brown.
  2. Success rate of this process is low. It's a process that requires patience and persistence.
  3. ​​Audio/video recordings and photography are not permitted in the class.