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Technical Guide

Conversion Table

CONVERSION CHART FOCAL VERSUS 35MM

Courtesy of Schneider Optics

APS C chip
35mm
37 x 49 chip
6x4.5
6x7
6x7
6x7
12
18
26
33
37
65
130
14
21
30
39
43
75
150
17
24
34
43
48
90
175
19
28
40
54
60
105
210
23
35
50
63
70
130
255
30
45
63
80
90
165
330
33
50
70
90
100
185
365
40
60
84
110
120
210
420
43
65
91
120
135
240
480
49
73
104
135
150
260
520
56
85
120
150
165
300
600
70
105
148
190
210
370
740
90
135
188
240
270
470
940

CONVERSION TABLE EV / LUX / FOOT CANDLE

Courtesy of Sekonic

1. Set the meter @ ISO 100 and take the reading in EV (exposure value).

2. Find your EV in the table below.

The corresponding equivalent lux or footcandles are 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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