22C-D030F103

22C-D030F103

22C-D030F103

22C-D030F103

现在，我们来看看你会在镜身上看到的一些数字具体都是什么意思。

通常镜身标识中的第一组数字是焦距，以mm为单位。如果数字只有1个，说明这支镜头只有一个焦距，也就是定焦镜头。如果有2个用横杠连起来的数字，说明这是一支变焦镜头。

标识中的第二组数字是大光圈。如果只有1个，说明这是一支恒定光圈镜头。如果有2个数字，这是一支可变光圈镜头。

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