Turn the Select Dial to
3
choose a desired flash
output.
●
After you finish the setting,
press Set Button and all the
settings will be displayed.
Multi: Stroboscopic Flash
With stroboscopic flash, a rapid series of flashes is fired. It 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 sec.
expressed as Hz), the number of flashes, and the flash output.
Press <
MODE
> button so
1
that <
> is displayed.
Calculating the Shutter Speed
During stroboscopic flash, the shutter remains open until the firing
stops. Use the formula below to calculate the shutter speed and set
it with the 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.
Number of Flashes / Flash Frequency = Shutter Speed
To avoid overheating and deteriorating the flash head, do not
use stroboscopic flash more than 10 times in succession.
After 10 times, allow the camera flash to rest for at least 15
minutes. If you try to use the stroboscopic flash more than 10
times in succession, the firing might stop automatically to
protect the flash head. If this happens, allow at least 15
minutes’ rest for the camera flash.
●
Stroboscopic flash is most effective with a highly reflective
subject against a dark background.
●
Using 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
”.
●
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.
MULTI
Hz
Maximum Stroboscopic Flashes:
Flash
output
Hz
Flash
output
Wireless Flash Shooting: Radio (2.4G) Transmission
Using a flash (master/slave) with a radio transmission wireless
shooting function make it easy to shoot with advanced wireless
multiple flash lighting, in the same way as E-TTL II autoflash
shooting.
The basic relative position and operation range are as shown in the
picture. You can then perform wireless E-TTL II autoflash shooting
just by setting the master unit to <ETTL>.
●
When the camera’s shooting mode is set to a fully automatic
mode or an Image Zone mode, the operations in this
chapter are not available. Set the camera’s shooting mode
to P/Tv/Av/M/B (Creative Zone Mode).
●
The
GIO1 C
attach to the camera is called the master unit,
and a
GIO1 C
that is wirelessly controlled is called the
slave unit.
●
You can also wirelessly control the
GIO1 C
set as the slave
unit with the transmitter
ST-III-C
(sold separately). For
details on setting the master unit functions, see the
transmitter’s instructions.
Set the flash frequency and
2
flash times.
●
Press the Function Button
2 <Times> to select the
flash times. Turn the Select
Dial to set the number.
●
Press the Function Button
3 <Hz> to select the flash
frequency. Turn the Select
Dial to set the number.
1/4
1/8
1/16
1/32
1/64
1/128
1/256
1
8
14
30
60
90
100
100
2
6
14
30
60
90
100
100
3
4
12
30
60
90
100
100
4
3
10
20
50
80
100
100
5
3
8
20
50
80
100
100
6-7
2
6
20
40
70
90
90
8-9
2
5
10
30
60
80
80
1/4
1/8
1/16
1/32
1/64
1/128
1/256
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
60-199
2
4
8
12
20
40
40
-
1
5 -
-
1
6 -
