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aperture
Sign in to saveAlso known as diaphragm
thumb|Different apertures of a lens thumb|In biology, the pupil (appearing as a black hole) of the eye is its aperture and the iris is its diaphragm. In humans, the pupil can constrict to as small as 2 mm (8.3) and dilate to larger than 8 mm (2.1) in some individuals. thumb|A camera aperture thumb|Definitions of Aperture in the 1707 Glossographia Anglicana Nova thumb|Aperture icon
~26 min read
Encyclopedic overview
13 sectionsContents
- Application
- In photography
- Maximum and minimum apertures
- Aperture area
- Aperture control
- Optimal aperture
- In biology
- Equivalent aperture range
- In scanning or sampling
- In popular culture
- See also
- References
- External links
thumb|Different apertures of a lens thumb|In biology, the pupil (appearing as a black hole) of the eye is its aperture and the iris is its diaphragm. In humans, the pupil can constrict to as small as 2 mm (8.3) and dilate to larger than 8 mm (2.1) in some individuals. thumb|A camera aperture thumb|Definitions of Aperture in the 1707 Glossographia Anglicana Nova thumb|Aperture icon
In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. The aperture defines a bundle of rays from each point on an object that will come to a focus in the image plane.
Excerpted from Wikipedia’s “aperture” article, available under the CC BY-SA 4.0 licence.