Educalingo cookies are used to personalize ads and get web traffic statistics. We also share information about the use of the site with our social media, advertising and analytics partners.
Got it
Search

Meaning of "f-number" in the English dictionary

Dictionary
DICTIONARY
section

PRONUNCIATION OF F-NUMBER

f-number play
facebooktwitterpinterestwhatsapp

GRAMMATICAL CATEGORY OF F-NUMBER

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
F-Number is a noun.
A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

WHAT DOES F-NUMBER MEAN IN ENGLISH?

f-number

F-number

In optics, the f-number of an optical system is the ratio of the lens's focal length to the diameter of the entrance pupil. It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography.

WORDS THAT BEGIN LIKE F-NUMBER

f-bomb
F-factor
f-stop
f-word
f.
f.a.
F.A.B.
f.a.q.
f.o.b.
f.o.r.
f.s.
f.w.d.
f/
fa
FA Cup
Fa Ngum
Fa Xian
Fa-hsien
fa-la
faa

WORDS THAT END LIKE F-NUMBER

accession number
call number
climber
cool as a cucumber
cucumber
house number
Humber
lumber
mobile number
number
outnumber
phone number
plumber
reference number
registration number
serial number
slumber
social security number
street number
telephone number
VAT number

Synonyms and antonyms of f-number in the English dictionary of synonyms

SYNONYMS

Translation of «f-number» into 25 languages

TRANSLATOR
online translator

TRANSLATION OF F-NUMBER

Find out the translation of f-number to 25 languages with our English multilingual translator.
The translations of f-number from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «f-number» in English.

Translator English - Chinese

f值
1,325 millions of speakers

Translator English - Spanish

número f
570 millions of speakers

English

f-number
510 millions of speakers

Translator English - Hindi

एफ संख्या
380 millions of speakers
ar

Translator English - Arabic

و العدد
280 millions of speakers

Translator English - Russian

е - число
278 millions of speakers

Translator English - Portuguese

número f
270 millions of speakers

Translator English - Bengali

f- সংখ্যা
260 millions of speakers

Translator English - French

f - nombre
220 millions of speakers

Translator English - Malay

F-nombor
190 millions of speakers

Translator English - German

f-Zahl
180 millions of speakers

Translator English - Japanese

F値
130 millions of speakers

Translator English - Korean

f 값
85 millions of speakers

Translator English - Javanese

F-nomer
85 millions of speakers
vi

Translator English - Vietnamese

f - số
80 millions of speakers

Translator English - Tamil

F-எண்
75 millions of speakers

Translator English - Marathi

एफ-नंबर
75 millions of speakers

Translator English - Turkish

f-sayısı
70 millions of speakers

Translator English - Italian

numero f
65 millions of speakers

Translator English - Polish

liczba f
50 millions of speakers

Translator English - Ukrainian

е - число
40 millions of speakers

Translator English - Romanian

f - număr
30 millions of speakers
el

Translator English - Greek

f - αριθμός
15 millions of speakers
af

Translator English - Afrikaans

F-getal
14 millions of speakers
sv

Translator English - Swedish

f - nummer
10 millions of speakers
no

Translator English - Norwegian

f - nummer
5 millions of speakers

Trends of use of f-number

TRENDS

TENDENCIES OF USE OF THE TERM «F-NUMBER»

The term «f-number» is quite widely used and occupies the 36.171 position in our list of most widely used terms in the English dictionary.
0
100%
FREQUENCY
Quite widely used
83
/100
The map shown above gives the frequency of use of the term «f-number» in the different countries.
Principal search tendencies and common uses of f-number
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «f-number».

FREQUENCY OF USE OF THE TERM «F-NUMBER» OVER TIME

The graph expresses the annual evolution of the frequency of use of the word «f-number» during the past 500 years. Its implementation is based on analysing how often the term «f-number» appears in digitalised printed sources in English between the year 1500 and the present day.

Examples of use in the English literature, quotes and news about f-number

EXAMPLES

10 ENGLISH BOOKS RELATING TO «F-NUMBER»

Discover the use of f-number in the following bibliographical selection. Books relating to f-number and brief extracts from same to provide context of its use in English literature.
1
Encyclopedia of Optical Engineering
The depth of field of a system may or may not be limited by the optical diffraction limit (and hence the F#). therefore a detailed discussion of alternative calculations for this parameter is included. F-NUMBER The f-number, sometimes written F# ...
Ronald G. Driggers, 2003
2
Optics For Dummies
f-number is the quantity that indicates the irradiance of the light incident on the recording medium relative to the irradiance entering the lens. It's not only related to the aperture size but also the focal length of the lens; it gives you an idea of the  ...
Galen C. Duree, Jr., 2011
3
Guide for Concrete Floor and Slab Construction
8.15.1.1 F-number system—Both flatness and levelness requirements should be described by Face Floor Profile Numbers (Face 1987). Two separate F-numbers are required to define the required flatness and levelness of the constructed ...
ACI Committee 302, 2004
4
Digital Nature Photography: The Art and the Science
The aperture in the lens is largest when the f-number is smallest and smallest when the f-number is large such as f/22 or even f/32. This relationship confuses beginning photographers because it is counterintuitive. Big f-numbers refer to small ...
John Gerlach, Barbara Gerlach, 2007
5
Image Sensors and Signal Processing for Digital Still Cameras
The F-number of a lens (F) is expressed as half the opening angle θ′ for the focused light beams in Figure 2.1, as shown as in Equation 2.4. (2.4) F = 1 2sinθ ′ In reality, because this depends on the cross-sectional area of the light beams,  ...
Junichi Nakamura, 2005
6
Laser Processing of Engineering Materials: Principles, ...
The focal number, or f -number, of a focusing optic characterizes its focusing ability. The f-number defines the convergence angle of the beam: f = F d B (4.1) where F is the focal length of the optic and dB is the diameter of the beam or aperture, ...
John Ion, 2005
7
Medical Infrared Imaging: Principles and Practices
A tradeoff has to occur to find the optimal f/number for the system. The table below shows the tradeoffs between optics diameter, focal length, resolution, and FOV. 5.5 Spectral Requirement The spatial resolution is heavily dependent on the ...
Mary Diakides, Joseph D. Bronzino, Donald R. Peterson, 2012
8
College Physics
Large aperture/small f-number Small aperture / large f-number Figure 26.25 The adjustable opening in front of a camera lens is called the aperture. Figure 26.26 Changing the aperture of a camera changes the f-number. A A larger f-number ...
Nicholas Giordano, 2012
9
Infrared Optics and Zoom Lenses
Allen Mann. dairy = 2.44XF (1.15) where k is the wavelength and F is the lens F- number. Detector arrays are specified by the detector size and the number of pixels. Again, the smallest target that can be discerned is limited by the detector size.
Allen Mann, 2000
10
Foundations Of Physics
(D/f)2 °c I/A/2 Thus, smaller the f-number N the greater is the brightness of the image, and, hence, the smaller is the exposure lime (or higher is the shutter speed). The maximum diameter of the aperture is equal to the diameter of the lens.
R. S. Gambhir, D. Banerjee, 1993

10 NEWS ITEMS WHICH INCLUDE THE TERM «F-NUMBER»

Find out what the national and international press are talking about and how the term f-number is used in the context of the following news items.
1
Microsoft Lumia 640 XL Review: Windows Phone Dreams Big
Its specs are again, decent: 1/3 inch sensor size, 28mm focal length, a minimum focus range of 10 cm, f/2.0 ratio for f-number/aperture. As far as ... «Softpedia News, Jun 15»
2
Mastering Depth of Field
The hyperfocal distance is given by a formula relating focal length, f-number and circle of confusion size that dictates the focal distance you ... «Fstoppers, Jun 15»
3
How to take better photos in low light
Then select the smallest f-number your lens can reach. Note that when using a smartphone you have no control over the aperture of the lens. «CNET, Jun 15»
4
The Exposure Triangle: Understanding How Aperture, Shutter …
A wider aperture (or lower f-number) means more light will be let in by the lens, simply because the opening is larger. A narrower aperture (or ... «Fstoppers, Jun 15»
5
Professor Bob Newman explains how it is possible for a lens to …
The f-number of a lens is the focal length divided by the aperture diameter. Since the teleconverter is placed at the back of the lens, behind the ... «What Digital Camera, Apr 15»
6
Battery-Free Video Cam Grabs Pix—and Power—from Same Light …
... self-powered camera system includes a sensor array (the green board to the rear of the unit) and a lens with an effective F-number N = 3:5. «Scientific American, Apr 15»
7
LG G4 sports leather, metallic, and other swappable back options in …
That's the lowest f-number we've seen in a flagship phone headed to the U.S.. The story behind the story: LG has been feeding us tidbits of ... «Greenbot, Apr 15»
8
LG confirms G4 unveiling for April 28, teases f/1.8 camera
That's the lowest f-number we've come across in a flagship phone in the U.S., though a handful of phones (from Lenovo, Xiaomi, and Acer) ... «Greenbot, Apr 15»
9
8 Essential Steps to Perfect Exposure - The Knowledge Any …
For example, if a lens has a focal length of 50 mm and its iris diameter is 25 mm, the f-number is 2 and the aperture diameter is f/2. Lenses use ... «cinema5D news, Mar 15»
10
Fujifilm XF 56mm F1.2 APD R
The dowside to the APD filter is a slight loss of light at faster apertures, so that f/1.2 effectively becomes f/1.7 (the effective F-number is shown in ... «PhotographyBLOG, Feb 15»

REFERENCE
« EDUCALINGO. F-Number [online]. Available <https://educalingo.com/en/dic-en/f-number>. Apr 2019 ».
en
English dictionary
Discover all that is hidden in the words on
index
a b c d e f g h i j k l m n o p q r s t u v w x y z