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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