S4EP11 雙浴顯影的原理、特性、心得分享/無腦顯影大法,好棒棒?!
Update: 2021-10-06
Description
雙浴黑白顯影液是利用顯影試藥的功能組成,將顯影主劑與顯影促進劑(鹼劑)分開成二道溶液使用,已曝光的黑白負片在A液(顯影主劑)中,將不產生金屬還原反應(弱酸),或產生很少的金屬還原反應(微鹼),在底片明膠層已經吸滿A液之後,將底片移置B液(顯影促進劑)中,此時開始快速產生還原反應,在高光部位A液會先行消耗完,而停止反應,但暗部因A液尚未用完,會持續作用。這樣的方式可以抑制高光的發展,增加暗部的細節。
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