Steinheil Macro-S-Quinon 55mm f/1.9 修復脫膠離膠 Fixing the elements separation

這支 Steinheil Macro-S-Quinon 55mm f/1.9 的前、後兩個膠合鏡組都有脫膠離膠的問題，分別位於第二、第三鏡組。 取出鏡片之後，依照標準處理程序，將鏡片分離、徹底清潔、精準重新黏合、鏡壁重塗黑漆，便可完成修復！

This Steinheil Macro-S-Quinon 55mm f/1.9 had an issue in elements separation on its 2nd and 3rd lens group. The problem can be fully restored by following the standard re-cementing procedure -- taking out the target lens group, taking apart the lens elements, cleaning thoroughly, re-cementing precisely and re-blackening the lens edge.