Instruction Manual
Hz
Maximum Stroboscopic Flashes:
Flash
output
Hz
Flash
output
Wireless Flash Shooting: Radio (2.4G) Transmission
Using a flash (transmitter/receiver) with a radio transmission
wireless shooting function make it easy to shoot with advanced
wireless multiple flash lighting, in the same way as TTL autoflash
shooting.
The basic relative position and operation range are as shown in the
picture. You can then perform wireless TTL autoflash shooting just
by setting the transmitter unit to <TTL>.
● The GIO1 O attach to the camera is called the transmitter
unit, and a GIO1 O that is wirelessly controlled is called the
receiver unit.
● You can also wirelessly control the GIO1 O set as the
receiver unit with the transmitter ST-III O or ST-IV O (sold
separately). For details on setting the transmitter unit
functions, see the transmitter’s instructions.
1/4
1/8
1/16
1/32
1/64
1/128
1/256
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8
14
30
60
90
90
90
2
6
14
30
60
90
90
90
3
4
12
30
60
90
90
90
4
3
10
20
50
80
90
90
5
3
8
20
50
80
90
90
6-7
2
6
20
40
70
90
90
8-9
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5
10
30
60
80
80
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1/32
1/64
1/128
1/256
10
2
4
8
20
50
70
70
20-50
2
4
8
16
30
40
40
60-100
2
4
8
12
20
40
40
Positioning and Operation Range (Example of wireless flash
shooting)
● Autoflash Shooting with One Receiver Unit
● Use the supplied mini stand to position the receiver unit.
● Before shooting, perform a test flash and test shooting.
● The transmission distance might be shorter depending on
the conditions such as positioning of receiver units, the
surrounding environment and whether conditions.
Transmission distance is about 100m.
● Auto Shooting with Two Receiver Groups
● Auto Shooting with Three Receiver Groups
You can divide the receiver units into two or three groups and
perform TTL autoflash while changing the flash ratio (factor). In
addition, you can set and shoot with a different flash mode for each
firing group, for up to 4 groups.
Wireless Multiple Flash Shooting
A
B
A
B
C
- 15 -
- 16 -
TRANSMITTER
RECEIVER