LEICA TRI-ELMAR-M 28-35-50mm f/4.0 APH. 鏡片清潔、調焦環對焦環維護潤滑 Cleaning glasses, CLA for focusing and focal length selection ring

這支LEICA TRI-ELMAR-M 28-35-50mm f/4.0 APH. "MATE" 送來時鏡片有明顯入塵與薄霧需要清潔。 另外，因為受到外力輕微碰撞，使得調焦環在切換焦段的時候轉動不順，對焦環轉動也有手感不順的問題。以上問題都在拆解清潔調整後都已順利解決！

This "MATE" LEICA TRI-ELMAR-M 28-35-50mm f/4.0 APH. came with heavy dust and slight fog internally that need cleaning. The focal length selection ring and the focusing ring did not work smooth because of slight external impact. All the mentioned problems have been solved after full disassembling the lens and adjusting.