Acronyms that contain the term focal ratio
What does focal ratio mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: focal ratio.
What does focal ratio mean?
- focal ratio, f number, stop number, speed(noun)
- the ratio of the focal length to the diameter of a (camera) lens system
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"focal ratio." Abbreviations.com. STANDS4 LLC, 2023. Web. 3 Dec. 2023. <https://www.abbreviations.com/focal%20ratio>.