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13821408-n focal ratio, f number, stop number, speed
SensesEng
the ratio of the focal length to the diameter of a (camera) lens system /
Wordnet ChineseGb
孔径焦距比 +
焦比 +
焦距比数 +
Wordnet GermanGer
Wordnet EnglishEng
103 focal ratio +
103 f number +
103 stop number +
103 speed +
Wordnet FrenchFra
accélération +
vitesse +
rapidité +
Wordnet SpanishSpa
número de foco +
razón focal +
velocidad +
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