User guide

Speedllte
220EX
Accessories
/Reference
Specifications
High-Speed Sync Guide Number Table
Shutter Speed
Guide Number (m/ft)
ISO 100 ISO 200
ISO 400
1/125
13.3/43,6 18,8/61 7
26 6/87.2
1/180
12/39.4 17/55.8
24/78.7
1/250 10.7/35 1
15 1/49.5 21.4/70.2
1/350
9.1/30 12.9/42.3
18.2/59.7
1/500
7,7/25 3 10.9/35 8
15.4/50.5
1/750
6 5/21.3 9.2/30.2 13/42.6
1/1000
5.4/17.7 7.6/24.9 10 8/35 4
1/1500 4.6/15.1
6.5/21.3
9.2/30.2
1/2000 3.8/12.5
5.4/17.7
7.6/24 9
1/3000 3 2/10.5
4.5/14.8 6.4/21
1/4000
2 7/8,9 4/13.1
5.4/17 7
38