收到這支鏡頭時，一開始以為是後鏡組鏡片發霉，在拆了鏡頭取出鏡片之後才發現，照片裡那奇怪的紋路不是在鏡片的表面，而是在後膠合鏡組兩片鏡片貼合面。
以前沒有見過膠合鏡組的貼合面有發霉的現象，這些紋路看起來雖然類似霉絲，但並不典型，或許膠合面也會長霉，不過我就先將這暫時先歸類為膠合鏡組的脫膠/離膠的問題。至於成因為何，為何會有這樣的紋路出現？ 我就不而知了
再將兩膠合鏡片分開並清理乾淨後，重新黏合在一起後，鏡片看起來乾淨沒問題了！ 問題順利解決！
This M35/1.4 ASPH. Titanium version got a separation issue with its rear cemented lens group.
At the first glance when I received, I thought the problem is fungus, as you can see in the attached images. When I took out the lens, I found that the lines are all between the two cemented surfaces of the glasses.
The weird lines look not like typical fungus, and I never see that there has fungus grown between cemented layer, so I think the problem is cemented group separation. Maybe I'm wrong~
After the re-cementing treatment, the lens looks clean and clear again!
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