13821408-n
'the ratio of the focal length to the diameter of a (camera) lens system';
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Czech
clonové číslo
Chinese (simplified)
焦距比数
,
孔径焦距比
,
焦比
,
曝光 速率
,
焦距 比数
,
孔径 焦距 比
,
曝光速率
English
speed
,
focal ratio
,
f number
,
stop number
Indonesian
kelajuan
Japanese
Fナンバー
Malaysian
kelajuan
Definitions
English
the ratio of the focal length to the diameter of a (camera) lens system
Japanese
焦点距離と(カメラ)レンズの直径の比
Relations
Hypernym:
ratio
Semantic Field:
relation
n
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