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  2. top of the aat hierarchies
  3. Objects Facet
  4. Components (hierarchy name)
  5. components (objects parts)
  6. [components by specific context]
  7. [tool and equipment components]
  8. camera components
  9. apertures
Scope note
The opening that allows light to pass through an optical instrument, whether the image is to be fixed chemically on photographic materials or merely viewed as in a camera obscura. Apertures may be simple fixed holes, or of variable width or diameter achieved by mechanical means. To refer to aperture size settings, use 'f-stops.'
Accepted term: 20-May-2024