LEICA LEITZ ELMARIT 28mm f/2.8 v.1 (9 elements) 九枚玉前內組脫膠/離膠重新黏合處理 Re-cementing for front internal triplet lens group elements separation

這支Leica M 28/2.8 v.1 一代鏡 九枚玉 的前內鏡組有脫膠離膠的問題，這是一個三片鏡片黏合在一起的膠合鏡組，邊緣有明顯的脫膠離膠痕跡。依照標準的脫膠離膠重新黏合程序，就可以將這個問題完全的修復。 除了脫膠離膠的問題，其他鏡片也有蠻明顯的薄霧，也一併清潔。
這支鏡頭有另外一組膠合鏡組位在光圈葉片後面，這個兩片黏合在一起的膠合鏡組也會有脫膠離膠的問題，同樣也是可以完全修復的。修復的案例請參照～http://lens-cla.blogspot.com/2018/07/leica-leitz-elmarit-28mm-f28-v1-9.html 

This Leica Leitz Elmarit 28/2.8 v.1 (9-element) had a problem of elements separation happened on its front internal lens group. It is a triplet lens group that was made up by 3 lens elements glued together. The elements separation can be totally restored by following the standard re-cementing procedure. Other than fixing the problem mentioned above, the other lens elements of this lens also need a cleaning for oily haze and dust.
This type of lens has another cemented lens group locates behind the aperture blades. This is a doublet lens group and also may suffer from elements separation. Please check the below link for reference~
http://lens-cla.blogspot.com/2018/07/leica-leitz-elmarit-28mm-f28-v1-9.html