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650d如何设置光圈
更新时间: 2020-10-31 00:00:00  

先把相机的模式转盘转到av,之后注视取景器并同时转动拨盘即可调整光圈值。光圈是一个用来控制光线透过镜头,进入机身内感光面的光量的装置,通常是在镜头内。表达光圈的大小是用f值。对于已经制造好的镜头,不可能随意改变镜头的直径,但是可以通过在镜头内部加入多边形或者圆型。

关键词: 650d 如何 设置 光圈

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