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Read more : http://www.ehow.com/how_8253694_use-lux-meter-photography.htmlFollow the directions
- for the lux meter and read the lux for the environment in which you are going to take a photo.
- Convert the lux reading to an exposure value as follows:
EV----------Lux
0------------2.5
1------------5
2------------10
3------------20
4------------40
5------------80
6------------160
7------------325
8------------650
9------------1,300
10-----------2,600
11-----------5,100
12-----------10,000
13-----------20,000
14-----------40,000
15-----------80,000
16-----------160,000
17-----------330,000
Use the Sunny 16 rule to convert the exposure value to an aperture and shutter speed. The Sunny 16 rule says that for an exposure value of 15, the aperture should be f16 and the shutter speed 1 divided by the ISO of the film used or as determined by the setting on a digital camera. For example, for an ISO of 200 and an exposure value of 15, the aperture of the camera should be f16 and the shutter speed 1/200 of a second.
Adjust the aperture and shutter speed depending on conditions or artistic considerations. Aperture is measured in whole stops, f1.0, f1.4, f2.0, f2.8, f4.0, f5.6, f8, f11, f16, f22, and f32. Each smaller aperture number doubles the amount of light reaching the film or sensor, and decreases the depth of field of the image. These stops correspond to steps in exposure value. For an ISO of 200 and an exposure value of 12, an aperture of f5.6 (three whole stops below f16, admitting three times as much light) would allow the photographer to maintain a shutter speed of 1/200 of a second (because EV12 is three whole steps below EV 15). The photographer could also choose an aperture of f4 and a shutter speed of 1/400 of a second, or f8 and a shutter speed of 1/100 of a second, etc.
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