KINOPTIK FOYER 75mm f/2.0 APOCHROMAT 鍍膜嚴重損傷拋光 Polish for serious coating damages

這支 KINOPTIK 75/2.0 APO 前鏡片內側面鍍膜應該是受到不當的清潔擦拭而嚴重損傷，處理方式就是施予拋光處理。
拋光處理後，鏡片恢復乾淨透亮。 最後兩張試拍照也可以分辨拋光前、後的成像有明顯差異，特別是在逆光強況下，光源處白霧擴散的程度有明顯的差別。

This KINOPTIK 75/2.0 APO shown serious coating damages on its front lens internal surface, maybe result from improper cleaning and wiping. The only way to make it clean and clear again is to make a polishing treatment.
From the last two sample images, you can see the big difference between before and after polish.