Most handheld meters in fact do this.
Hand held light meter.
Additionally it is far more accurate because it only takes into account about 1 of the frame.
At its simplest it calculates an aperture and shutter value that you set your camera to for a correct exposure of a given scene.
A light meter is a device for measuring light.
These meters are sometimes called flash meters.
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All handheld light meters can measure ambient light existing light be it natural or man made in a scene.
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These light meter tools are useful for creating properly exposed images.
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The display includes buttons that are very easy to touch which makes it incredibly simple to adjust settings and take readings.
A handheld light meter is a separate tool for evaluating light intensity and calculating exposure.
The handheld light meter below has earned itself a spot as our editor s pick because of its ease of use.
Reflective light meters record the intensity of the light levels reflected off your subject and aren t as accurate.
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How to use a hand held light meter to make perfectly exposed photographs almost every modern camera currently being produced has a lightmeter built into it.
It can also provide all the aperture and shutter combinations that match an exposure value.
This allows you to read the amount of light in your surroundings and determine your shutter stop and aperture value.
Sophisticated handheld photo light meters can gauge intensity down to tenths of an f stop allowing for precise readings.
This is something that your built in light meter does not.
Some light meters are also capable of measuring strobe exposures.
The hand held light meter is a very useful tool that allows you to meter the incident light and not the reflected light.
This also includes any constant light source like fluorescents or leds you may add.
