What is Exposure?
| Exposure Meters |
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An instrument that measures the amount of lights falling on a subject (incident-light meter) or emitted or reflected by a subject (reflected-light meter), so that aperture and shutter speed settings can be computed. Also called a light meter. An instrument for measuring the intensity of lights so as to determine the shutter and aperture setting necessary to obtain correct exposure. Exposure meters may be built into the camera or be completely separate units. Separate meters can sometimes measure the lights falling on the subject (incident reading) as well as the lights reflected by it (reflected reading); built-in meters measure only reflected light. Both types of meter may be capable of measuring light from a particular part of the subject (spot metering) as well as taking an overall reading. Commonly called a light meter. |
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