COOKE SPEED PANCHRO SER. II 50mm f/2 (T/2.3) 後鏡片變質霉疤拋光處理 Polishing treatment for rear lens fungus scars

這支送來拋光處理的鏡頭 COOKE SPEED PANCHRO SER. II 50mm f/2 (T/2.3) 的後鏡片滿佈許多小白點，看起來像是發霉清理過後留下來的霉疤，也有點像是玻璃的變質。
它的主人希望鏡片能夠盡可能乾淨清透，想要讓鏡片接受拋光處理。
最後兩張照片就是拋光前後鏡片外觀的明顯差異。 拋光處理是在容許的範圍內，在不影響成像表現的前提之下，以傳統拋光程序，去除鏡片輕微淺層的傷痕

This lens, COOKE SPEED PANCHRO SER. II 50mm f/2 (T/2.3), shows full of tiny white dots on its rear lens glass, which looks like glass deterioration or fungus scars. The owner want it clean and clear, and ask for a polishing treatment.
The last two attached photos show a huge difference between before and after polishing treatment.
Following the traditional optical polishing technique, this treatment has the power to eliminate the shallow damages on the glass without altering its performance!