从官方拆解图来看,索尼部分镜头的XD马达和对焦镜组采用的是非金属材质支架(腾龙情况也差不多 ,尼康Z400/2.8VRS和Z600/4VRS还没有看到拆解),在遇到磕碰撞击时可能没有传统的环形超声波马达那样可靠。
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