OLYMPUS OM ZUIKO MACRO 90mm f/2.0 發霉髒污全鏡片清潔 Cleaning fungus & stain on the glass

這支 OM90/2.0 Macro 的鏡片狀況不是很好，幾乎每一片鏡片都發霉了，後鏡浮動鏡組裡還有一片鏡片除了長了嚴重的霉之外，還有奇怪的刮痕和髒污。
鏡頭因為有浮動鏡組的原因，結構上比較複雜，拆解過程會耗費比較多的時間，每一片鏡片都須清理。

This OM 90/2.0 Macro got a lots of fungus on its glasses, and one piece glass of the floating elements has strange scratches and stain. All the dirt need to be cleaned away, and all the glasses need to be cleaned.
The structure of a lens with floating elements is more complicate, so this lens takes more time to disassemble.