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[光学知识] 一张图解释景深焦距光圈物距关系

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微信图片_20231218170736.png

! _1 O1 h4 D$ `) w4 E" M8 E$ |: ^1 y7 f, ^. N; _  f
在焦点前后各有一个容许弥散圆,这两个弥散圆之间的距离就叫景深
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