Contarex Carl Zeiss Sonnar 85mm f/2.0 脫膠離膠重新黏合 Re-cementing for the triplet elements separation

Contarex Carl Zeiss Sonnar 85mm f/2.0 這款鏡頭的鏡片結構是7片3組的設計，第一組是獨立的一片鏡片，第二、三組分別都是3片鏡片黏合在一起的膠合鏡組
本案例中的這支鏡頭的主要問題就是第二鏡組有明顯的脫膠離膠痕跡
依照標準的脫膠離膠重新黏合的處理程序，便可將問題完全解決，恢復原狀

The optical structure of the Contarex Carl Zeiss Sonnar 85mm f/2.0 is made up of 7 elements in 3 groups. The first group is an independent element, the 2nd and 3rd groups are formed by gluing 3 elements together. 
The major problem of this case is the 2nd lens group has strong elements separation/balsam separation.
The problem can be completely fixed and restored to its original condition by following the standard re-cementing procedure.