Results for “Aperture”
11 terms
Effective Aperture
The working f-number of a lens once it is focused close, which is always darker than the marked aperture because the lens is extended away…
Optics, Lenses & FiltersEntrance Pupil
The apparent size and position of the aperture as seen from in front of the lens, which is what the f-number is calculated from.
Exposure & MeteringEquivalent Exposure
Any different combination of aperture, shutter speed and ISO that yields identical image brightness.
Optics, Lenses & FiltersExit Pupil
The apparent size and position of the aperture as seen from behind the lens, which governs how light strikes the sensor.
Exposure & MeteringExposure
The total amount of light that reaches the sensor or film, set by the combination of aperture, shutter speed and the scene's brightness.
Exposure & MeteringExposure Triangle
The teaching model that links aperture, shutter speed and ISO as three interdependent controls, where changing one requires compensating…
Exposure & MeteringExposure Value (EV)
A single number describing every combination of aperture and shutter speed that produces the same exposure.
Cameras, Formats & SystemsEquivalent Focal Length
The full-frame focal length that would give the same angle of view as a given lens on a smaller format.
Files, Metadata & WorkflowEXIF
The standard block of technical metadata a camera writes into a file, recording settings and equipment.
Exposure & MeteringExposure Compensation
A deliberate offset applied to the camera's metered reading, expressed in stops, to make an image brighter or darker than the meter…
Focus & Depth of FieldEye AF
A refinement of face detection that locates and focuses on the eye itself, and usually lets the photographer choose which one.