Sekonic L-758DR Manuale Utente
-34-
6. Advanced Functions
4.
How to use an incident illuminance (LUX or FC) meter (L-758DR/758D)
1.
Turn the Lumisphere retracting ring
①
to lower it to the
(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.
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.
measurement.
5.
The measured EV can be converted to find the
brightness level with the conversion table below.
brightness level with the conversion table below.
* EV value
→
Foot candle (FC) conversion table
-2
-1
-1
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
0.06
0.12
0.23
0.46
0.93
0.12
0.23
0.46
0.93
1.9
3.7
7.4
3.7
7.4
15
30
59
30
59
0.08
0.16
0.33
0.66
0.16
0.33
0.66
1.3
2.6
5.3
2.6
5.3
11
21
42
84
42
84
9
10
11
12
13
14
15
16
17
18
19
13
14
15
16
17
18
19
120
240
480
950
240
480
950
1900
3800
7600
3800
7600
15000
30000
61000
30000
61000
120000
170
340
670
340
670
1300
2700
5400
2700
5400
11000
22000
43000
86000
43000
86000
170000
EV
0
0.5
0
0.5
Decimal places
EV
Decimal places
Reference:
• L-758CINE can read LUX or FC directly when the custom setting function is used (refer to
page 40).
* EV value
→
Lux conversion table
-2
-1
-1
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
0.63
1.3
2.5
5.0
2.5
5.0
10
20
40
80
20
40
80
160
320
640
320
640
0.88
1.8
3.5
7.1
3.5
7.1
14
28
57
28
57
110
230
450
910
450
910
9
10
11
12
13
14
15
16
17
18
19
13
14
15
16
17
18
19
1800
3600
7200
3600
7200
14000
29000
58000
29000
58000
120000
230000
460000
930000
230000
460000
930000
1900000
EV
EV
Decimal places
0
0.5
0
0.5
Decimal places
1300
2600
5100
2600
5100
10000
20000
41000
82000
20000
41000
82000
160000
330000
660000
330000
660000
1300000