Template:F//doc

Usage

This template produces the notation for f-number, stylizing the f as a script 'f/' as is common in photography.

This template accepts up to 2 unnamed parameters, to create an f-number such as {{f/|2}} → f/2, or an aperture range such as given for variable-aperture zoom lenses: {{f/|4|5.6}} → f/4–5.6. When a second aperture parameter is provided, the range is separated by an en-dash (in accordance with MOS:NUMRANGE).

This template also accepts 3 named parameters, |capf=yes, |sep=, and |link=yes to control the formatting of the output:

• |capf=yes produces a non-italic capital 'F' for: {{f/|8|capf=yes}} → F/8
• |sep=separator character uses the specified separator character instead of the default /: {{f/|11|sep=:}} → f:11
• |link=yes links the produced text to the f-number article: {{f/|16|link=yes}} → f/16

Examples

• {{f/}} → f/
• {{f/|sep=}} → f
• {{f/|2}} → f/2
• {{f/|2|capf=y}} → F/2
• {{f/|4|5.6}} → f/4–5.6
• {{f/|8|capf=y|sep=:}} → F:8
• {{f/|#}} → f/#
• {{f/|11|link=y}} → f/11

Accessibility note

By default (without the |capf= parameter), this template emits a standard f character that is stylized with CSS to discourage use of visually-stylized, but incorrect or inaccessible, alternatives such as:

• 𝑓, "Mathematical small f" (Unicode U+1D453);
• ƒ, "Latin Small Letter F with Hook" (U+0192) – often misused by Mac keyboard users (⌥ Opt+f) for being easy to type, and visually similar to the previous character;
• f, {{mvar|f}};
• $f$, <math>f</math>.

Note that the last two examples above are read as the character 'f' by screen readers.

The entire output content is wrapped in a <span>...</span> HTML tag for semantic purposes, fallback copy/paste, and screen reader recognition for accessibility.

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:F/ in articles based on its TemplateData.

TemplateData for f/

Displays a photographic f-number with a script 'f/'

Template parameters

Parameter		Description	Type	Status
aperture	1	f-number (aperture). Usually a number, but accepts text. Example 2.8	Number	suggested
2nd aperture	2	Second aperture, to denote an aperture range. Separated from first aperture with an en-dash. Example 4	Number	optional
separator	sep	Text. Specifies a different separator character (or string) than the default '/' (slash) character. Example :,  	String	optional
use capital-F	capf	Boolean. Uses a non-italic capital 'F' character instead of the default italic lowercase 'f'. Example yes, y	String	optional
link	link	Boolean. Makes the entire output a wikilink to the [[f-number]] article. Example yes, y	String	optional