apertures
Gaps letting through
Apertures are openings, gaps, or holes, especially ones that allow light or other matter to pass through.
The term appears most often in technical contexts: in photography and optics, the aperture is the opening in a lens that controls how much light reaches the film or sensor.
A wider aperture lets in more light and creates a shallower depth of field; a narrower one does the opposite.
She adjusted the aperture to compensate for the bright sunlight.
Lens opening ratio
- lensLight-focusing curved glass
- shutterHinged window covering
- exposureState of being unprotected
- depth of fieldZone of acceptable sharpness
diaphragm · iris · bokeh · focal length · stop · wide open · light meter · camera
Glass-fitted wall opening
- doorwayPassage into a room
- openingGap or start
- portalImposing entrance or gate
- skylightWindow in a roof
vent · slot · gap · passage · loophole · embrasure · arrow slit · oculus
Learner or eye opening
- irisEye's pigmented disc
- pinholeMinute circular opening
- openingGap or start
- diameterDistance across through center
telescope · microscope · objective · spectrometer · diffraction · resolution · collimator · beam
Bodily passage entrance
pupil · opening · passage · duct · cavity · sphincter · nasal · stoma
Narrow elongated opening
- pinholeMinute circular opening
- collimatorParallel ray producer
- beamStructural support member
- spectrographWavelength-separating recording instrument
interferometer · diffraction · wavelength · radiation · detector · sensor · mask · filter
f-stop
Lens opening ratio
depth of field · diaphragm · iris · bokeh · focal length · stop · wide open · light meter · camera · f-number
window
Glass-fitted wall opening
skylight · vent · slot · gap · passage · loophole · embrasure · arrow slit · oculus · transom
pupil
Learner or eye opening
diameter · telescope · microscope · objective · spectrometer · diffraction · resolution · collimator · beam · slit
orifice
Bodily passage entrance
ear canal · pupil · opening · passage · duct · cavity · sphincter · nasal · stoma · foramen
slit
Narrow elongated opening
- pinholeMinute circular opening
- collimatorParallel ray producer
- beamStructural support member
spectrograph · interferometer · diffraction · wavelength · radiation · detector · sensor · mask · filter · baffle
aperturesclosures
Acts of sealing shut
blockages · seals · obstructions · plugs · occlusions
- lens apertureOpening controlling light entry
- aperture priorityPhotographer chooses f-stop only