Nikon NIKKOR 13mm f/5.6 內鏡片嚴重變質拋光處理 Polishing for the internal lens element surface deterioration

這支非常稀有的 Nikon超廣角鏡頭 Nikon NIKKOR 13mm f/5.6 的內部鏡片狀況沒有很好，除了一些鏡片上有長霉之外，還有一個鏡面有嚴重的變質問題，在這樣的鏡況下拍的照片 細節都不清楚，都是矇矇霧霧的。 挽救這支鏡頭唯一的方法，就是透過拋光的方式，將鏡面上的變質層拋除。處理完成後，鏡頭表現恢復原本狀態，請參考下面試拍範例，可以清楚看到變質鏡面拋光前、後成像的顯著差異

The optical condition of this ultra rare Nikon NIKKOR 13mm f/5.6 was not good, in additional to the problem of fungus inside, there is also a surface deterioration happened on one internal element. The severe surface deterioration made the lens produce poor image quality. 

The only way to save this lens and make it work again is to make a polish treatment to the deteriorated surface. After polishing, the glass looks clean and clear again. As you can see from the testing images below, there are significant difference between before and after polish treatment.