Battery life and recycling time, High-speed sync guide number table – Canon 220 EX User Manual
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Speedlite
220EX
Accessories
/Reference
Specifications
Battery Life and Recycling Time
Battery Type
Size-AA alkaline bat-
teries
Recycling Time
0.1 to 4.5 sec.
No. of Flashes
250 to 1700
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
• The above specifications are based on Canon's testing
standards.
• Using size-AA nickel-hydride batteries will yield only about
70 to 80 percent of the flashes (1550 mAh at full output)
obtainable with size-AA alkaline batteries. The recycling
time will also be about half the time with size-AA alkaline
batteries.
220EX(E) 15-10-2002 07:11 Pagina 38