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單詞乎

f-number

音標['ef'nʌmbə]
f-number是什么意思、f-number怎么讀

f-number漢語翻譯

n. 數(shù), 光圈數(shù)

f-number英語解釋

名詞 f-number:

  1. the ratio of the focal length to the diameter of a (camera) lens system
    同義詞：focal ratio, f number, stop number, speed

f-number詳細解釋

f-num.ber

n.（名詞）
The ratio of the focal length of a lens or lens system to the effective diameter of its aperture.Also called f-stop
F值：物鏡或物鏡系統(tǒng)的焦距與入射光孔直徑之比也作 f-stop

來源：
f(ocal length)
f(ocal length)
number
number

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