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.'
- Date of creation: 10-Mar-2025
Accepted term: 10-Mar-2025