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18105镜头相当于几倍变焦

更新时间: 2020-09-21 00:00:00     

105除以18等于5、83一般把这种较6倍光学变焦。35-70就是2倍光变70-210就是3倍光变18-200就是11倍光变。基本就是这么算的。

关键词: 镜头 相当

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