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High-speed Sync Guide Number [For ISO 100]
Zoom Position
85mm
70mm
50mm
35mm
28mm
24mm
20mm *1
* 1 : With the wide - angle panel attached.
Double the guide numbers for ISO 100 when using ISO 400. (ISO 50 = X0.7, 1SO 1600 = X4)
[Example] Lens zoom position = 85mm, shutter speed = 250
Guide Number for ISO 400 would be 16 x 2 = 32
High-speed Sync Guide Number [For ISO 200]
Zoom Position
85mm
70mm
50mm
35mm
28mm
24mm
20mm *1
* 1 : With the wide - angle panel attached.
250
500
16.0
12.7
14.7
11.6
13.4
10.6
11.1
8.8
9.8
7.7
9.4
7.4
6.2
4.9
250
500
22.6
18.0
20.8
16.4
19.0
15.0
15.7
12.4
13.9
10.9
13.3
10.5
8.8
6.9
Shutter speed
1000
2000
9.5
6.9
8.7
6.4
7.9
5.8
6.6
4.8
5.8
4.2
5.5
4.1
3.7
2.7
Shutter speed
1000
2000
13.4
9.8
12.3
9.1
11.2
8.2
9.3
6.8
8.2
5.9
7.8
5.8
5.2
3.8
4000
6000
5.1
4.3
4.7
3.9
4.2
3.6
3.5
3
3.1
2.6
3.0
2.5
2.0
1.7
4000
6000
7.2
6.1
6.6
5.5
5.9
5.1
4.9
4.2
4.4
3.7
4.2
3.5
2.8
2.4
《31》
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