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f number

med. ouverture numérique
f-number ['efˌnʌmbə]
astr. dénominateur d'ouverture
comp., MS f : chiffre (In photography, the diameter of the aperture expressed in terms of the focal length of the camera lens. The greater the f-number, the less light reaches the film and the more in focus the objects in the foreground and the background will be. For example, with an f-number = 16 the objects in the far background will be in focus. Whereas, with an f-number = 2 the background will be blurry (while foreground objects are in focus))
tech. ouverture relative
F number
rem.sens. nombre F; ouverture relative minimale
 English thesaurus
f-number ['efˌnʌmbə]
abbr. focal number
abbr., opt. f /#
f number
: 3 phrases in 3 subjects
Chemistry1
General1
Transport1

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