Focus Length
– 05 –
19
Setting 19. Mode Selection
Button 20. < >Modeling Lamp Setting 21. <+/->Power Output 22. Function Button
1 23. Function Button 2 24. Function Button 3 25. Function Button 4
LCD Panel
(1)i-TTL Autoflash Zoom : zoom display (Page 23)
: Automatic : Manual(Page 13) i-TTL : i-TTL
autoflash
Focus length (Page 23)
: High-speed sync (Page 12)
Distance indicator display
Flash exposure compensation amount
The display will only show the settings currently applied. The functions
displayed above function buttons 1 to 4, such
as SYNC and <M/A/B/C> , change according to settings’ status. When a button or
dial is operated, the LCD panel illuminated.
(2)M Manual Flash (3) RPT Flash
M : Manual flash Manual flash output
RPT: Stroboscopic flash Number of flashes Flash frequency
– 06 –
(4) Radio Transmission Shooting Master Unit Flash mode
: Radio transmission wireless shooting
What’s in the Box of GIO1 N
1. Flash Unit 2. Lithium Battery 3. USB Battery Charger
4. USB Line 5. Charger
6. Mini Stand
7. Protection Case
8. Instruction Manual
Slave Unit : Slave icon
Firing group Channel
: Slave
LCD Panel in Three Modes
Attached to the Camera
1
2
3
4
5
6
7
Separately Sold Accessories
The product can be used in combination with the following accessories sold
separately, so as to achieve best photography effects: ST-IV C & ST-III TTL
wireless flash trigger, Round-Head accessory kit etc.
2.4G Radio Transmission: As a Master Unit
2.4G Radio Transmission: As a Slave Unit
– 07 –
– 08 –
Battery
Features
1. This flash unit uses Li-ion battery which has long runtime. The available
charge-and-discharge times are 500.
2. It is reliably safe. The inner circuit is against overcharge,
overdischarge, overcurrent, and short circuit.
3. Take only 3.5 hours to fully charge the battery by using the standard
battery charger.
Cautions
1. Do not short circuit. 2. Do not expose to rain or immerse into water. This
battery is not
water proof. 3. Keep out of reach of children. 4. No over 24 hours’ continuous
charging. 5. Store in dry, cool, ventilated places. 6. Do not put aside or
into fire. 7. Dead batteries should be disposed according to local
regulations. 8. If the battery had ceased using for over 3 months, please make
a
full recharge.
Loading and Unloading the Battery
1 To unload the battery, hold down the battery remove button and push the
battery downwardly to take it out.
2 According to the triangle sign on the battery pack, insert it into the
compartment until a white knob locks the battery with a click sound.
Battery Level Indication
Make sure the battery pack is securely loaded in the flash. Check the battery
level indication on the LCD panel to see the remaining battery level.
Battery Level Indication Meaning
3 grids
Full
2 grids
Middle
1 grid
Low
Blank grid
Lower battery, please recharge it.
Blinking
The battery level is going to be used out immediately. And the flash will auto
power off in 1 minute. Note: Please recharge the battery as soon as possible
(within 10 days). Then, the battery can be used or be placed for long period.
– 09 –
LED Modeling Lamp
Press the Modeling Lamp Setting button to set the modeling lamp. Short press
the Set Button to turn on or off the modeling lamp. When turning the modeling
lamp on, turn the select dial to set its brightness. There are 10
levels(01~10) for choice.
Attaching to a Camera
1 Attach the Camera Flash. Rotate the hotshoe fixing buckle to the left and
insert the camera flash into the camera’s hotshoe.
2 Secure the Camera Flash. Rotate the hotshoe fixing buckle to the right until
it locks up.
3 Detach the Camera Flash. Press the button and rotate the hotshoe fixing
buckle to the left until it is loosened.
Power Management
Use ON/OFF Power Switch to power the flash unit on or off. Turn off if it will
not be used for an extended period of time. Setting as a master flash, it will
turn the power off automatically after a certain period (approx. 90 seconds)
of idle use. Pressing the camera shutter halfway or pressing any flash button
will wake up the flash unit. Setting as a slave flash, it will enter sleep
mode after a certain period (adjustable, 60 minutes by default) of idle use.
Pressing any flash button will wake it up.
– 10 –
C.Fn DisablingAuto Power Off function is recommended when the flash is used
off camera. (C.Fn-STBY, Page 24)
C.Fn Slave Auto Power Off Timer is set to 60 minutes by default. Another
option “30 minutes” is available. (C.FnSv STBY, Page 24)
Flash Mode — i-TTL Autoflash
This flash has three flash modes: i-TTL, Manual (M), and RPT (Stroboscopic).
In i-TTL mode, the camera and the flash will work together to calculate the
correct exposure for the subject and the background. In this mode, multiple
TTL functions are available: FEC, HSS, second curtain sync, modeling flash. *
Press < MODE > Mode Selection Button and three flash modes will display on the
LCD panel one by one with each pressing.
i-TTL Mode
Press < MODE > Mode Selection Button to enter i-TTL mode. The LCD panel will
display. Press the camera release button halfway to focus. The aperture
and effective flash range will be displayed in the viewfinder. When the
shutter button is fully pressed, the flash will fire a pre-
flash that the camera will use to calculate exposure and flash output the
instant before the photo is taken.
FEC: Flash Exposure Compensation
With FEC function, this flash can adjust from -3 to +3 in 1/3rd stops. It is
useful in situations where minor adjusting of the TTL system is needed based
on the environment. Setting FEC:
1 Press Function Button 2 Press the <+/-> button. The icon < > and flash
exposure compensation amount will be highlighted on the LCD panel.
2 Set the flash exposure compensation amount. Turn the Select Dial to set the
amount. “0.3”means 1/3 step, “0.7”means 2/3 step. To cancel the flash exposure
compensation, set the amount to “+0”.
3 Press Set Button again to confirm the setting.
– 11 –
High-Speed Sync
High Speed Sync (FP flash) enables the flash to synchronize with all camera
shutter speeds. This is convenient when you want to use aperture priority for
fill-flash portraits.
Choose high-speed sync
1 Set the flash sync speed to 1/320s (auto FP) or 1/250s (auto FP) in Nikon
camera setting. Half press the shutter button and < > will be displayed on the
LCD panel. Now the high-speed sync function gets started.
2 Turn the camera dial, and the shutter speed can be set to or more than
1/250s.
3 Check the shutter speed through the camera viewfinder to confirm whether the
FP high-speed function is used. If the shutter speed is or over 1/250s, it
means the highspeed is booted up.
If setting the flash sync speed to 1/320s (auto FP) or 1/250s(auto FP) in
Nikon camera setting,< > will always be displayed on the panel no matter what
the actual shutter speed is.
With high-speed sync, the faster the shutter speed, the shorter the effective
flash range.
Set the flash sync speed to Non auto FP in Nikon camera setting. When half
pressing the shutter, < > will disappear.
Multi flash mode cannot be set in high-speed sync mode.
Over-temperature protection may be activated after 15 consecutive high-speed
sync flashes.
Second-Curtain Sync
With a slow shutter speed, you can create a light train following the subject.
The flash fires right before the shutter closes.
In camera setting, choose REAR to achieve second curtain sync.
– 12 –
M: Manual Flash
The flash output is adjustable from 1/1 full power to 1/256th power in 1/10th
stop increments. To obtain a correct flash exposure, use a hand-held flash
meter to determine the required flash output.
1 Press < MODE > button so that < M > is displayed.
2 Press the <+/-> button and turn the Select Dial to choose a desired flash
output amount.
3 Press Set Button again to confirm the setting.
Optic S1 Secondary Unit Setting In M manual flash mode, press <S1/S2> button
so that this flash can function as an optic S1 secondary flash with optic
sensor. With this function, the flash will fire synchronously when the main
flash fires, the same effect as that by the use of radio triggers. This helps
create multiple lighting effects.
Optic S2 Secondary Unit Setting Press <S1/S2> button so that this flash can
also function as an optic S2 secondary flash with optic sensor in M manual
flash mode. This is useful when cameras have pre-flash function. With this
function, the flash will ignore a single “preflash” from the main flash and
will only fire in response to the second, actual flash from the main unit.
S1 and S2 optic triggering is only available in M manual flash mode.
RPT: 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.
1 Press button so that < RPT > is displayed.
2 Set the flash frequency and flash times. Press the Function Button 2
to select the flash times. Turn the Select Dial to set the number. Press the
Function Button 3 to select the flash frequency. Turn the Select Dial to
set the number.
3 Press the <+/-> button and turn the Select Dial to choose a desired flash
output. After you finish the setting, press Set Button and all the settings
will be 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.
Number of Flashes / Flash Frequency = Shutter Speed 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.
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.
– 13 –
– 14 –
Maximum Stroboscopic Flashes:
Flash Hz output
1
2
3
4
1/4
8
6
4
3
1/8
14 14 12 10
1/16
30 30 30 20
1/32
60 60 60 50
1/64
90 90 90 80
1/128
90 90 90 90
1/256
90 90 90 90
5 6-7 8-9
3
2
2
8
6
5
20 20 10
50 40 30
80 70 60
90 90 80
90 90 80
Flash Hz output
10
20-50 60-100
1/4
2
2
2
1/8
4
4
4
1/16
8
8
8
1/32
20
16
12
1/64
50
30
20
1/128
70
40
40
1/256
70
40
40
Wireless Flash Shooting: Radio (2.4G) Transmission
You can set up five slave groups for TTL autoflash shooting. With TTL
autoflash, you can easily create various lighting effects.
Any flash settings for the slave units(auto flash, manual flash and
stroboscopic flash) on the master flash in TTL mode will be automatically sent
to the slave units. So the only thing you need to do is to set the master unit
for each slave group without any operation for the slave units at all during
the shooting.
This flash can work in i-TTL /M /RPT/ OFF flash modes when set as a master
unit.
Note: Even with multiple slave units, the ONE series flash trigger
can control all of them via wireless. In this user manual, “master unit”
refers to the camera
flash on a camera and “slave unit” will be controlled by the master unit.
Positioning and Operation Range (Example of wireless flash shooting) Autoflash
Shooting with One Slave Unit
Transmission distance is about 100m.
Use the supplied mini stand to position the slave unit. Before shooting,
perform a test flash and test shooting. The transmission distance might be
shorter depending on
the conditions such as positioning of slave units, the surrounding environment
and whether conditions.
Wireless Multiple Flash Shooting You can divide the slave units into two or
three groups and perform i-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 5 groups. Auto Shooting with Two Slave Groups
A B
Auto Shooting with Three Slave Groups
C
A B
– 15 –
– 16 –
1. Wireless Settings
You can switch between normal flash and wireless flash. For normal flash
shooting, be sure to set the wireless setting to OFF.
Master Unit Setting
Press < > button so that < > is displayed on the LCD panel.
Slave Unit Setting
Press < > button so that < >
or <
are displayed on
the LCD panel.
2. Group Mode Selection
1 Short press the Function Button 1 and group can be changed in OFF/TTL/M.
Choose one of them as master unit’s flash mode.
2 Short press the button to gain RPT mode.
3. Setting the Communication Channel
If there are other wireless flash systems nearby, you can change the channel
IDs to prevent signal interference. The channel IDs of the master unit and the
slave unit(s) must be set to the same.
1 Press
