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1. Set Meter @ ISO 100 and take the reading in EV (Exposure Value).
2. Find your EV in the chart below. The corresponding Lux or Footcandle equivalent will be to the right.
| EV |
Lux (Lux = FC x 10.76) |
FC |
| -1 |
1.25 |
0.12 |
| -0.5 |
1.75 |
0.16 |
| 0 |
2.50 |
0.23 |
| 0.5 |
3.50 |
0.33 |
| 1 |
5.00 |
0.46 |
| 1.5 |
7.00 |
0.66 |
| 2 |
10.00 |
0.93 |
| 2.5 |
14.00 |
1.31 |
| 3 |
20.00 |
1.86 |
| 3.5 |
28.00 |
2.63 |
| 4 |
40.00 |
3.72 |
| 4.5 |
56.00 |
5.26 |
| 5 |
80.00 |
7.43 |
| 5.5 |
112.00 |
10.51 |
| 6 |
160.00 |
14.86 |
| 6.5 |
225.00 |
21.02 |
| 7 |
320.00 |
29.73 |
| 7.5 |
450.00 |
42.04 |
| 8 |
640.00 |
59.46 |
| 8.5 |
900.00 |
84.09 |
| 9 |
1,280.00 |
119.00 |
| 9.5 |
1,800.00 |
168.00 |
| 10 |
2,600.00 |
240.00 |
| 10.5 |
3,600.00 |
336.00 |
| 11 |
5,120.00 |
476.00 |
| 11.5 |
7,200.00 |
673.00 |
| 12 |
10,240.00 |
951.00 |
| 12.5 |
14,400.00 |
1,345.00 |
| 13 |
20,480.00 |
1,903.00 |
| 13.5 |
28,900.00 |
2,691.00 |
| 14 |
40,960.00 |
3,805.00 |
| 14.5 |
57,800.00 |
5,382.00 |
| 15 |
81,900.00 |
7,611.00 |
| 15.5 |
116,000.00 |
10,763.00 |
| 16 |
164,000.00 |
15,221.00 |
| 16.5 |
232,000.00 |
21,526.00 |
| 17 |
328,000.00 |
30,442.00 |
| 17.5 |
464,000.00 |
43,052.00 |
| 18 |
656,000.00 |
60,885.00 |
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EV/Lux/FootCandle Conversion Chart
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