Canon Speedlite 58OEX Instruction Manual page 25

To avoid overheating and deteriorating the flash head, do not fire more than 10
stroboscopic bursts. Then allow the Speedlite to rest for at least 10 min.
[i] (,
Stroboscopic flash is most effective with a highly reflective subject against a dark
background.
®
Using a tripod, a remote switch, and external power source is recommended.
*
A flash output of 1/1 or 1/2 cannot be set for stroboscopic flash. .
is
Stroboscopic flash can be used with "bulb."
*
If the number of flashes is displayed as - -, the firing will continue until the shutter is
closed or the battery runs out. The number of flashes will be limited as shown by the
table below.
Max. Stroboscopic Flashes
~
1 2 3 4
5
6-7 8-9
Flash Output
..
..
1/4 7 6 5 4 4 3
3
1/8 14 14 12 10
8 6 5
1/16 30 30
30
20 20 20
10
1/32 60 60 60 50
50
40
30
1/64 90 90
90
80
80
70
60
1/128 100 100 100 100 100 90 80
~
..
Flash Output
10 11
12-14 15 -19 20 - 50 60 -199
1/4
2
2
2
2
2 2
1/8 4 4
4
4
4 4
1/16
8
8 8 8 8 8
1/32 20 20 20 18 16 12
1/64 50 40 40 35 30 20
1/128 70 70 60 50 40 40
6
If the number of flashes is displayed as - -, the maximum number of flashes will be as shown
by the table below regardless of the firing frequency.
Flash Output
1/4 1/8
1/10
1/32
1/64 1/128
Flashes
2
4
8
12
20 40
25