LEICA TRI-ELMAR-M 16-18-21mm f/4 ASPH. 脫膠離膠重新黏合處理 Re-cementing treatment for rear lens elements separation

這支 LEICA TRI-ELMAR-M 16-18-21mm f/4 ASPH. 後部其中一組膠合鏡組出現相當明顯的脫膠/離膠的問題。依照標準的步驟，分離、清潔、重新黏合，便可將問題解決！

This LEICA TRI-ELMAR-M 16-18-21mm f/4 ASPH. had a lens elements separation problem on one of its rear internal cemented lens group. The problem can be restored by following the standard treatment procedure: Taking apart lens elements, Cleaning, Re-cementing under precise collimation.