对焦锁定系统已经从点固定改变为面固定，其原理是利用一个圆环及内部为高抗震性而设计的机械结构来实现的。
Focus locking system has been changed from point fixing to surface fixing utilizing a ring and internal mechanical structure designed for high vibration resistance.
对焦锁定系统已经从点固定改变为面固定，其原理是利用一个圆环及内部为高抗震性而设计的机械结构来实现的。
Focus locking system has been changed from point fixing to surface fixing utilizing a ring and internal mechanical structure designed for high vibration resistance.
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