Guide Number Table of High Speed Synch mode
Camera format
Shutter
ISO
speed
250
500
1000
ISO100
2000
4000
6000
250
500
1000
ISO200
2000
4000
6000
250
500
1000
ISO400
2000
4000
6000
DIGITAL
58mm
24.2
18.8
14
10.2
7.3
6.2
34.2
26.5
19.8
14.4
10.4
8.8
48.4
37.6
28
20.4
14.6
12.4
Zoom position
48mm
34mm
24mm
22.4
20.1
17.5
17.4
15.6
13.6
13
11.7
10.1
9.5
8.5
7.4
6.8
6.1
5.3
5.7
5.2
4.5
31.6
28.5
24.7
24.6
22.1
19.2
18.4
16.5
14.3
13.4
12.0
10.4
9.6
8.6
7.5
8.1
7.3
6.3
44.8
40.2
35
34.8
31.2
27.2
26
23.4
20.
19
17
14.8
13.6
12.2
10.6
11.5
10.3
8.9
* With the wide-angle panel attached
19mm
16mm
15.7
14.3
12.2
11.1
9.1
8.3
6.6
6
4.8
4.3
4.0
3.7
22.2
20.3
17.2
15.7
12.8
11.7
9.4
8.6
6.7
6.1
5.7
5.2
31.4
28.6
24.4
22.2
18.2
16.6
13.2
12
9.6
8.6
8.0
7.3
*13mm
9.4
7.3
5.5
4
2.9
2.4
13.3
10.3
7.7
5.6
4.0
3.4
18.8
14.6
11
8
5.8
4.8
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