Enter a word or phrase in any language 👆
Language:
Translation and analysis of words by ChatGPT artificial intelligence
On this page you can get a detailed analysis of a word or phrase, produced by the best artificial intelligence technology to date:
- how the word is used
- frequency of use
- it is used more often in oral or written speech
- word translation options
- usage examples (several phrases with translation)
- etymology
What (who) is F-number - definition
RATIO OF THE FOCAL LENGTH TO THE DIAMETER OF THE ENTRANCE PUPIL
F/stop; F stop; F number; F-stop; Focal ratio; F-Stop; F-Number; Relative aperture; F stops; T stop; Fstop; Relative Aperture; Working f-number; Tstop; Tstops; T-stops; T-stop; T stops; F-stops; F/number; Half stop; Stop number; T-stop system; F Number; F/; Ƒ-number; Transmission stop; T-number (photography); T number (photography); H stop; H-stops; H-stop; H stops; H number (photography); H-number (photography); F/11
![Diagram of decreasing [[aperture]]s, that is, increasing f-numbers, in one-stop increments; each aperture has half the light-gathering area of the previous one.](https://commons.wikimedia.org/wiki/Special:FilePath/Aperture diagram.svg?width=200 "Diagram of decreasing [[aperture]]s, that is, increasing f-numbers, in one-stop increments; each aperture has half the light-gathering area of the previous one.")
![Yashica-D TLR]] camera front view. This is one of the few cameras that actually says "F-NUMBER" on it.](https://commons.wikimedia.org/wiki/Special:FilePath/Yashica-D front.jpg?width=200 "Yashica-D TLR]] camera front view. This is one of the few cameras that actually says \"F-NUMBER\" on it.")
f-number
¦ noun Photography the ratio of the focal length of a camera lens to the diameter of the aperture being used for a particular shot.
F-number
In optics, the f-number of an optical system such as a camera lens is the ratio of the system's focal length to the diameter of the entrance pupil ("clear aperture").Smith, Warren Modern Optical Engineering, 4th Ed.
f-stop
¦ noun Photography a camera setting corresponding to a particular f-number.
Wikipedia
F-number
In optics, the f-number of an optical system such as a camera lens is the ratio of the system's focal length to the diameter of the entrance pupil ("clear aperture"). It is also known as the focal ratio, f-ratio, or f-stop, and is very important in photography. It is a dimensionless number that is a quantitative measure of lens speed; increasing the f-number is referred to as stopping down. The f-number is commonly indicated using a lower-case hooked f with the format f/N, where N is the f-number.
The f-number is the reciprocal of the relative aperture (the aperture diameter divided by focal length).
Examples of use of F-number
1. "This can potentially create a recipe for disaster, therefore in order to have a stress–free day it‘s essential to get the variants right." His formula equates the perfect Christmas (PX) to the number of family members (F), number (P) and cost () of Christmas presents given, number of walks taken (W), number of games played (G), the amount of wine and chocolate (W:C) consumed and the ratio of turkey to nut roast (T:R). He says that by dividing that by the total days (D) you spend with your family, you have the perfect Christmas.