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S4EP1 新手入門大型相機的詳細介紹
暗房bb
2021-04-06
·
1 hour 2 minutes
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Description
公式
實效f值=測得光圈值x(底片焦平面到鏡頭焦平面距離/鏡頭焦距)
曝光倍數=(底片焦平面到鏡頭焦平面距離/鏡頭焦距)平方
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