LEICA SUMMICRON-M 35mm f/2.0 ASPH. 11611 Millennium Black Paint 黑漆版 鏡片清潔 Cleaning lens elements

這支 LEICA SUMMICRON-M 35mm f/2.0 ASPH. 11611 Millennium Black Paint 鏡片有髒污薄霧，全鏡片拆解清潔。 非球面鏡片在拆解清潔完成後，組裝時 需要特殊的三邊校正，保持光軸不偏移，確保成像品質。

This LEICA SUMMICRON-M 35mm f/2.0 ASPH. 11611 Millennium Black Paint had slight fog and dusts internally, so I made a full lens elements cleaning. 

After cleaning, during the reassembling procedure, the aspherical element needs additional trilateral calibration (three point adjustment) to keep the optical axis without biases and ensure the optical performance is the same as its original condition.