SMC PENTAX-FA 20mm f/2.8 後膠合鏡組脫膠/離膠 重新膠合處理 Separation Treatment to Hazy Rear Cemented Lens Group

這支 PENTAX-FA 20mm f/2.8 的後膠合鏡組出現 脫膠/離膠 的問題
脫膠/離膠的問題，只要依照標準的處理程序，將原本黏合在起一起的兩片鏡片分離，去除變質壞掉的膠，並精準的重新黏合，問題便可解決！

Pentax-A 20/2.8與 FA 20/2.8 的光學結構相同，A20/2.8 同樣也是後面這組膠合鏡組會有比較高的比率會有脫膠/離膠的問題。


The rear cemented lens group of this PENTAX-FA 20mm f/2.8 got a separation problem. This kind of problem can be totally resolved by following the standard treatment procedure I created.

Pentax-A 20/2.8 has the same optical structure as FA 20/2.8, and the rear cemented lens group of A20/2.8 also prone to have the separation issue.