NIKON AF NIKKOR 35-70mm f/2.8 鏡片變質拋光 Coating/glass deterioration polishing treatment

這是一款相當熱門的好鏡頭，有非常好的表現，它有一個通病，就是鏡片會起霧，這霧不是一般可以輕易擦拭乾淨的霧，起霧的原因一直都被認為是脫膠/離膠所造成，但事實上它的霧是玻璃變質。 變質起霧的處理方法只有拋光，將鍍膜和淺層的玻璃拋除，鏡片就會恢復相當乾淨通透。

從下面的照片可以看到，沒有處理前是悲劇，處理完就很乾淨了，事實上畫質並沒有因為拋光而受影響。 恭喜這支鏡頭復活了！

This is a very popular lens with excellent image quality, but it has a common issue -- hazy glasses.  The haze on the glass is not the normal fog that can be cleaned off easily by wiping, but a kind of coating and glass deterioration make the glass looks hazy and dirty. This is impossible to rescue before, but now it can be revived by polishing.

You can see the images below, following the polishing treatment, the hazy glass restored back to clean and clear condition. After polishing, the lens still keep the same image quality as an intact lens.

Congratulation for the rejuvenated lens!