Operation Manual

Sync Speed
Flash Coverage
24 28 35 50 70 105
1/180 12.1 13.1 16.3 17.9 19.5 22.1
1/250 11.0 12.0 14.9 16.3 17.7 20.1
1/350 9.7 10.5 13.0 14.3 15.6 17.7
1/500 8.1 8.8 11.0 12.0 13.1 14.8
1/750 6.8 7.4 9.2 10.1 11.0 12.5
1/1000 5.8 6.3 7.8 8.5 9.3 10.5
1/1500 4.8 5.3 6.5 7.1 7.8 8.8
1/2000 4.1 4.4 5.5 6.0 6.5 7.4
1/3000 3.4 3.7 4.6 5.1 5.5 6.2
1/4000 2.9 3.1 3.9 4.3 4.6 5.3
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Major Specifications
Guide No.
[Normal Sync]
Flash Coverage (mm) 24 28 35 50 70 105
Guide No. 23 25 31 34 37 42
(At ISO 100 in meters)
[High-speed Sync (FP Flash)]
(At ISO 100 in meters)
• The Guide No. above apply to full flash output.
Recycling Time and Flash Count
Battery Type Recycling Time (sec.) Flash Count
Size-AA alkaline batteries Approx. 0.1 - 7.5 Approx. 200-1400
• 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.
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