LEICA LEITZ NOCTILUX 50mm f/1.2 全鏡整理 Full CLA

鏡頭主人將這支 LEICA NOCTILUX 50/1.2 送來希望大保養
其實它沒有嚴重的問題，主要需要處理的是以下幾點～

1. 鏡片清潔。有一片鏡片有類似水漬痕的痕跡，以及一些輕微的霧，與較大的入塵需要清潔
2. 對焦環重新潤滑。對焦環大致的轉動是順暢的，不過在微調的時候，手感會輕微生澀不順
3. 光圈環轉動時，各檔位停頓手感不明顯
4. 光圈葉片沾油清潔

以上幾點，就需要將鏡頭完全分解，處理的過程當然會包含鏡筒內壁髒污的清潔

對焦環重新順滑時，會用上品質非常穩定的合成油脂，不會隨著使用時間拉長或溫度壓力的變化，而出現油水分離的問題。

This LEICA NOCTILUX 50/1.2 comes with following minor problems and its owner want me resolve it~

1. Cleaning glasses. One of the internal glass has water like marks on it, and others show some slight fog and large dust that need a cleaning.
2. Re-lubricating the focusing ring. The large movement during focusing is smooth, but micro-movement is a little bit choppy.
3. The aperture ring works smooth, but do not have clear solid click-stops that need to have an adjustment.
4. The aperture blades have oil and need a cleaning.

I use high quality synthetic grease with stable feature to lubricate the focusing ring to avoid "oil separation" issue that result in generating liquid oil spreading all over the internal mechanical structure (including aperture blades).