How To Use An Incident Illuminance (Lux Or Fc) Meter (L-758Dr/758D) - Sekonic L-758C Operating Manual

6. Advanced Functions
4.

How to use an incident illuminance (LUX or FC) meter (L-758DR/758D)

Turn the Lumisphere retracting ring ① to lower it to the
1.
(retracted) mark position.
2. Make sure that any compensation Exposure/Calibration
compensation: see page 36 & 37, Compensation of
camera exposure profile: see page 46 is canceled.
3. Set the meter to EV mode and ISO 100.
4. Place the meter parallel to the subject and take a
measurement.
5. The measured EV can be converted to find the
brightness level with the conversion table below.
* EV value
Decimal places
EV
-2
-1
0
1
2
3
4
5
6
7
8
* EV value
Decimal places
EV
-2
-1
0
1
2
3
4
5
6
7
8
Reference:
• L-758CINE can read LUX or FC directly when the custom setting function is used (refer to
page 40).
-34-
Lux conversion table
0 0.5
0.63
0.88
1.3
1.8
2.5 3.5
5.0
7.1
10 14
20
28
40
57
80 110
160 230
320
450
640 910
Foot candle (FC) conversion table
0 0.5
0.06
0.08
0.12 0.16
0.23
0.33
0.46
0.66
0.93
1.3
1.9 2.6
3.7
5.3
7.4 11
15
21
30
42
59
84
Decimal places
0
EV
9
1300
10
2600
11
5100
12
10000
13
20000
14
41000
15
82000
16
160000
17
330000
18
660000
19
1300000
Decimal places
0
EV
9
120
10
240
11
480
12
950
13
1900
14
3800
15
7600
16
15000
17
30000
18
61000
19
120000
0.5
1800
3600
7200
14000
29000
58000
120000
230000
460000
930000
1900000
0.5
170
340
670
1300
2700
5400
11000
22000
43000
86000
170000