焦距長的鏡頭，長度也會長，100毫米鏡頭同樣光圈值，直徑就要比50mm粗一倍，體積=4*二者的長度比，這就是代價

來源: 移花接木於 2023-01-16 18:21:31 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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