Definition of F Number in English :
Define F Number in English
F Number meaning in English
Meaning of F Number in English
Pronunciation of F Number in English
F Number pronunciation in English
Pronounce F Number in Englishsee synonyms of f number
the ratio of the focal length to the diameter of a (camera) lens system
WordNet Lexical Database for English. Princeton University. 2010.
Collins English Dictionary. Copyright © HarperCollins Publishers
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.
The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.