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VOCABULARY:  click links for detailed glossary page:

  • 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.

  • STOP: A stop is a doubling or halving of the amount of light let in when taking a photo

  • 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.

  • NOISE: (Digital Noise) Visual distortion consisting of tiny grainy colored pixels or specks in photographs taken in low light situations with high ISO.
  • MANUAL MODE: A mode where the photographer can control all camera settings (Shutter Speed, Aperture, ISO, WB, Flash, etc.)
  • METERING: It is the process of measuring light with a light meter to determine the correct exposure. Cameras meter at 18% gray.
  • EXPOSURE COMPENSATION: A camera feature to allow the user to adjust the automatically calculated exposure. 



Subpages (1): METERING