17
Flash Mode Multi: Stroboscopic Flash
Calculating the Shutter Speed
Number of Flashes / Flash Frequency = Shutter Speed
With stroboscopic flash, a rapid series of flashes are fired. The feature can be used to
capture a multiple images of a moving subject in a single photograph.
You can set the firing frequency (number of flashes per second, expressed as Hz), the
number of flashes, and the flash output.
During stroboscopic flash, the shutter should remain open until the firing stops. Use the formula
below to calculate the shutter speed and set it on your camera.
For example, if the number of flashes is 10 and the firing frequency is 5 Hz, the shutter speed
should be at least 2 seconds.
Stroboscopic flash is most effective with a highly reflective or a subject that has strong contrast
against a dark background.
Use of a tripod and a remote control is recommended.
A flash output of 1/1 and 1/2 cannot be set for stroboscopic flash.
Stroboscopic flash can be used with “Bulb”, known as “Open Flash” technique.
If the number of flashes is displayed as “--”, the firing will continue until the shutter closes or the
battery is exhausted. The number of flashes will be limited, as shown by the following table below.
•
•
To avoid overheating and deteriorating the flash head, do not use Multi/stroboscopic flash more
than 10 times in succession. After 10 times, allow the flash to rest for at least 15 minutes. If you try
to use the stroboscopic flash more than 10 times in succession, the firing may stop automatically
to protect the flash head. If this happens, allow the flash to rest for at least 15 minutes.
Maximum Stroboscopic Flashes
1/4
1/8
1/16
1/32
1/64
1/128
1/256
1
7
14
30
60
90
100
100
2
6
14
30
60
90
100
100
3
5
12
30
60
90
100
100
4
4
10
20
50
80
100
100
5
4
8
20
50
80
100
100
6-7
3
6
20
40
70
90
90
8-9
3
5
10
30
60
80
80
Flash
Output
Hz
10
2
4
8
20
50
70
70
11
2
4
8
20
40
70
70
12-14
2
4
8
20
40
60
60
15-19
2
4
8
18
35
50
50
20-50
2
4
8
16
30
40
40
60-100
2
4
8
12
20
40
40
1
Press
< MODE >
button so that
< MULTI >
is
displayed.
2
Turn the Select
Dial to choose
a desired flash
output.
3
Set the flash frequency and flash times.
•
Press
<SET>
Button to select the flash times. Turn the Select Dial to set
the number.
•
Press
<SET>
Button to select the flash frequency. Turn the Select Dial
to set the number.
•
After you finish the setting, press
<SET>
button and all the settings
will be displayed.
CH
1
Multi
A
OFF
1/
256
5 - 5
Hz
MODE
MENU
GR/CH
SET
10
%
MENU
SET MODE
MENU
GR/CH
SET
10
%
