Guide number table
Guide number table
The values for fi ring angle (ZOOM) indicate the focal length for a Four Thirds lens
(Unit: mm). The values inside the parentheses indicate the focal length for 135
fi lm (35 mm fi lm).
In the standard fl ash modes (standard light distribution; ISO100)
Flash
intensity
7 (14)
(RATIO)
1/1
11.0
1/2
7.8
1/4
5.5
1/8
3.9
1/16
2.8
1/32
1.9
1/64
1.4
1/128
1.0
40 (80)
1/1
33.0
1/2
23.3
1/4
16.5
1/8
11.7
1/16
8.3
1/32
5.8
1/64
4.1
1/128
2.9
Firing angle (ZOOM)
12 (24)
14 (28)
21.0
22.0
14.9
15.6
10.5
11.0
7.4
7.8
5.3
5.5
3.7
3.9
2.6
2.8
1.9
1.9
45 (90)
52 (105)
36.0
37.0
25.5
26.2
18.0
18.5
12.7
13.1
9.0
9.3
6.4
6.5
4.5
4.6
3.2
3.3
17 (35)
25 (50)
24.0
27.0
17.0
19.1
12.0
13.5
8.5
9.6
6.0
6.8
4.2
4.8
3.0
3.4
2.1
2.4
60 (120)
67 (135)
38.0
40.0
26.9
28.3
19.0
20.0
13.4
14.1
9.5
10.0
6.7
7.1
4.8
5.0
3.4
3.5
30 (60)
35 (70)
29.0
30.0
20.5
21.2
14.5
15.0
10.3
10.6
7.3
7.5
5.1
5.3
3.6
3.8
2.6
2.7
75 (150)
42.0
29.7
21.0
14.9
10.5
7.4
5.3
3.7
67
EN