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P043

EXPOSURE TRIANGLE

TermDefinition
APERTURE an opening in the lens that changes in size to control the AMOUNT of light passing through the lens of the camera.
APERTURE PRIORITY MODE an automatic camera mode where you set the camera's aperture and the meter will set the shutter speed for correct exposure.
DEPTH OF FIELD the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image.
F-STOP A fraction that measures of the size of the aperture opening on a camera.
IRIS The part of a lens mechanism that can expand and contract to control the amount of light passing through a lens.
ISO A system used to measure and adjust how sensitive a digital camera is to light.
RECIPROCITY when you ADD a "stop" of light entering the camera with one of the camera exposure controls (i.e. shutter), then BALANCE it by taking AWAY a "stop" of light with the other (i.e. aperture)
SHUTTER The device on a camera that opens and allows light to pass to the sensor or film for a set period of time in order make an exposure.
SHUTTER SPEED the length of time a shutter remains open as measured in seconds or fractions of a second.
SHUTTER PRIORITY MODE A camera shooting mode that lets the photographer define the camera's shutter speed and the camera will then set the aperture for a correct exposure based on its light metering.
EXPOSURE BRACKET a technique of taking several shots of a scene using different camera settings to ensure getting a good image
RECIPROCITY when you ADD a "stop" of light entering the camera with one of the camera exposure controls (i.e. shutter), then BALANCE it by taking AWAY a "stop" of light with the other (i.e. aperture)
SHUTTER The device on a camera that opens and allows light to pass to the sensor or film for a set period of time in order make an exposure.
SHUTTER SPEED the length of time a shutter remains open as measured in seconds or fractions of a second.
SHUTTER PRIORITY MODE A camera shooting mode that lets the photographer define the camera's shutter speed and the camera will then set the aperture for a correct exposure based on its light metering.
EXPOSURE BRACKET a technique of taking several shots of a scene using different camera settings to ensure getting a good image
Created by: dmaww