Godox TT685F User manual

迅丽TTL机顶闪光灯
Thinklite TTL Camera Flash
INSTRUCTION MANUAL
说 明 手 册
中英文双语 / Chinese English Bilingual
在使用本产品之前：
请先仔细阅读本手册，以确保您能安全使用。请保存好本手册以备将
来查询参考。
For Fuji
Before using this product:
Please read this user manual carefully in order to ensure your safety
and the proper operation of this product. Keep for future reference.
705-TT685F-00 Made in China
地址/Add: 深圳市宝安区福海街道塘尾社区耀川工业区厂房2栋1层至4层、4栋1层至4层
1st to 4th Floor, Building 2/ 1st to 4th Floor, Building 4, Yaochuan Industrial Zone, Tangwei
Community, Fuhai Street, Bao’an District, Shenzhen 518103, China
电话/Tel: [phone](8062) 传真/Fax: [phone]
邮箱/E-mail: [email protected] http://www.godox.com
深圳市神牛摄影器材有限公司
GODOX Photo Equipment Co., Ltd.

Thank you for purchasing this product.
This TT685F camera flash applies to Fuji series cameras and is
compatible with TTL autoflash. With this TTL compatible flash, your
shooting will become simpler. You can easily achieve a correct flash
exposure even in complex light-changing environments. This
camera flash features:
● GN60 (m ISO 100, @200mm). 22 steps from 1/1 to 1/128.
● Fully support Fuji series TTL camera flash. Workable as Master or
Slave unit in a wireless flash group.
● Use dot-matrix LCD panel to make clear and convenient
operations.
● With built-in 2.4GHz wireless remote system to support
transmitting and receiving.
● Provided multiple functions, include HSS (up to 1/8000s), second-
curtain sync, FEC, etc.
● Use optional FT-16S to adjust flash parameters & trigger the flash.
● Stable consistency and color temperature with good even lighting.
● Support with firmware upgrade.
Foreword
Compatible Camera Models
• This table only lists the tested camera models, not all Fuji cameras. For the
compatibility of other camera models, a self-test is recommended.
• Rights to modify this table are retained.
A
B
C
X-Pro2, X-T20 , X-T2 , X-T1
X-Pro1 , X-T10 , X-E1 , X-A3
X100F, X100T
Fuji cameras are divided into three kinds according to their
different controlling ways to camera flash:
Compatible camera models & functions support
A
B
C
Camera Flash
TTL Flash M Manual Flash Multi
Strobo
-scopic
Flash
Stan-
dard REAR HSS(FP)REAR HSS(FP)
√ √ √ √ √ √ √
2.4G Wireless Control
√ √ √
√ √ √ √ √ √ √
√ √ √ √ √ √ √
√ √ √
√ √ -- √ √ -- √
-- -- -- -- -- -- -- --
A
B
C
AF-assist Beam
√
--
--
camera
Stan-
dard
TTL Flash M Manual Flash Multi
Strobo
-scopic
Flash
Stan-
dard REAR HSS(FP)REAR HSS(FP)
Stan-
dard
1. X 100T do not have second curtain sync (REAR) function.
2. The AF assist beam will light up when the shutter is at low speed (＜200).
- 25 - - 26 -
Always keep this product dry. Do not use in rain or in damp
conditions.
Do not disassemble. Should repairs become necessary, this
product must be sent to an authorized maintenance center.
Keep out of reach of children.
Stop using this product if it breaks open due to extrusion, falling
or strong hit. Otherwise, electric shock may occur if you touch
the electronic parts inside it.
Do not fire the flash directly into the eyes (especially those of
babies) within short distances. Otherwise visual impairment
may occur.
Do not use the flash unit in the presence of flammable gases,
chemicals and other similar materials. In certain circumstance,
these materials may be sensitive to the strong light emitting
from this flash unit and fire or electromagnetic interference may
result.
Do not leave or store the flash unit if the ambient temperature
reads over 50℃. Otherwise the electronic parts may be
damaged.
Turn off the flash unit immediately in the event of malfunction.
Warning

Thank you for purchasing this product.
This TT685F camera flash applies to Fuji series cameras and is
compatible with TTL autoflash. With this TTL compatible flash, your
shooting will become simpler. You can easily achieve a correct flash
exposure even in complex light-changing environments. This
camera flash features:
● GN60 (m ISO 100, @200mm). 22 steps from 1/1 to 1/128.
● Fully support Fuji series TTL camera flash. Workable as Master or
Slave unit in a wireless flash group.
● Use dot-matrix LCD panel to make clear and convenient
operations.
● With built-in 2.4GHz wireless remote system to support
transmitting and receiving.
● Provided multiple functions, include HSS (up to 1/8000s), second-
curtain sync, FEC, etc.
● Use optional FT-16S to adjust flash parameters & trigger the flash.
● Stable consistency and color temperature with good even lighting.
● Support with firmware upgrade.
Foreword
Compatible Camera Models
• This table only lists the tested camera models, not all Fuji cameras. For the
compatibility of other camera models, a self-test is recommended.
• Rights to modify this table are retained.
A
B
C
X-Pro2, X-T20 , X-T2 , X-T1
X-Pro1 , X-T10 , X-E1 , X-A3
X100F, X100T
Fuji cameras are divided into three kinds according to their
different controlling ways to camera flash:
Compatible camera models & functions support
A
B
C
Camera Flash
TTL Flash M Manual Flash Multi
Strobo
-scopic
Flash
Stan-
dard REAR HSS(FP)REAR HSS(FP)
√ √ √ √ √ √ √
2.4G Wireless Control
√ √ √
√ √ √ √ √ √ √
√ √ √ √ √ √ √
√ √ √
√ √ -- √ √ -- √
-- -- -- -- -- -- -- --
A
B
C
AF-assist Beam
√
--
--
camera
Stan-
dard
TTL Flash M Manual Flash Multi
Strobo
-scopic
Flash
Stan-
dard REAR HSS(FP)REAR HSS(FP)
Stan-
dard
1. X 100T do not have second curtain sync (REAR) function.
2. The AF assist beam will light up when the shutter is at low speed (＜200).
- 25 - - 26 -
Always keep this product dry. Do not use in rain or in damp
conditions.
Do not disassemble. Should repairs become necessary, this
product must be sent to an authorized maintenance center.
Keep out of reach of children.
Stop using this product if it breaks open due to extrusion, falling
or strong hit. Otherwise, electric shock may occur if you touch
the electronic parts inside it.
Do not fire the flash directly into the eyes (especially those of
babies) within short distances. Otherwise visual impairment
may occur.
Do not use the flash unit in the presence of flammable gases,
chemicals and other similar materials. In certain circumstance,
these materials may be sensitive to the strong light emitting
from this flash unit and fire or electromagnetic interference may
result.
Do not leave or store the flash unit if the ambient temperature
reads over 50℃. Otherwise the electronic parts may be
damaged.
Turn off the flash unit immediately in the event of malfunction.
Warning

Foreword
Compatible Camera Models
Warning
Name of Parts
Body
Control Panel
LCD Panel
What's in the Box of TT685F?
Separately Sold Accessories
Attaching to a Camera
Power Management
Flash Mode: TTL Autoflash
FEC (Flash Exposure Compensation)
High-Speed Sync
Second-Curtain Sync
Flash Mode – M: Manual Flash
Flash Mode – Multi: Stroboscopic Flash
Wireless Flash Shooting: Radio (2.4G) Transmission
Other Applications
Wireless Control Function
Sync Triggering
Auto Focus Assist Beam
Bounce Flash
Creating a Catchlight
ZOOM: Setting the Flash Coverage and Using the Wide Panel
Low Battery Indicator
C.Fn: Setting Custom Functions
Firmware Upgrade
Protection Function
Technical Data
Troubleshooting
Maintenance
Contents
25
25
26
29
32
32
33
35
36
37
42
45
45
46
47
48
49
Conventions used in this Manual
● This manual is based on the assumption that both the camera and
camera flash’s power switches are powered on.
● Reference page numbers are indicated by “p.**”.
● The following alert symbols are used in this manual:
The Caution symbol gives supplemental information.
The Note symbol indicates a warning to prevent shooting
problem.
Thinklite TTL Camera Flash
E l e c t r o n i c C a m e r a F l a s h
- 27 - - 28 -

Foreword
Compatible Camera Models
Warning
Name of Parts
Body
Control Panel
LCD Panel
What's in the Box of TT685F?
Separately Sold Accessories
Attaching to a Camera
Power Management
Flash Mode: TTL Autoflash
FEC (Flash Exposure Compensation)
High-Speed Sync
Second-Curtain Sync
Flash Mode – M: Manual Flash
Flash Mode – Multi: Stroboscopic Flash
Wireless Flash Shooting: Radio (2.4G) Transmission
Other Applications
Wireless Control Function
Sync Triggering
Auto Focus Assist Beam
Bounce Flash
Creating a Catchlight
ZOOM: Setting the Flash Coverage and Using the Wide Panel
Low Battery Indicator
C.Fn: Setting Custom Functions
Firmware Upgrade
Protection Function
Technical Data
Troubleshooting
Maintenance
Contents
25
25
26
29
32
32
33
35
36
37
42
45
45
46
47
48
49
Conventions used in this Manual
● This manual is based on the assumption that both the camera and
camera flash’s power switches are powered on.
● Reference page numbers are indicated by “p.**”.
● The following alert symbols are used in this manual:
The Caution symbol gives supplemental information.
The Note symbol indicates a warning to prevent shooting
problem.
Thinklite TTL Camera Flash
E l e c t r o n i c C a m e r a F l a s h
- 27 - - 28 -

RST
SET
01. Catchlight Panel
02. Built-in Wide Panel
03. Flash Head
04. Optic Control Sensor
05. Focus Assist Beam
06. Wireless Control Port
07. Sync Cord Jack
08. Hotshoe
09. Dot-marix LCD Panel
10. Lock Ring
11. Battery Compartment
12. USB Port
13. Slave Flash Ready Indicator
14. External Power Supply Socket
● Body
15. <MODE> Mode Selection
Button / Lock button
16. < >Wireless Selection
Button
17. Select Dial
18. <SET> Set Button
19. ON/OFF Power Switch
20. < > Test Button / Flash
Ready Indicator
21. Function Button 1
22. Function Button 2
23. Function Button 3
24. Function Button 4
● Control Panel
● LCD Panel
Name of Parts
21
22 23
15
20 18
19
16
24
17
(1) TTL Autoflash
Zoom : zoom display (Page 44)
: Automatic
: Manual(Page 35)
TTL : TTL autoflash
Focus length (Page 44)
: High-speed sync
(Page 34)
: Flash exposure
compensation (Page 33)
Distance indicator
display
Flash exposure
compensation amount
(2) M Manual Flash
● The display will only show the settings currently applied.
● The functions displayed above function buttons 1 to 4, such
as and , change according to settings’ status.
● When a button or dial is operated, the LCD panel
illuminated.
M : Manual flash
Manual flash output
(3) Multi Stroboscopic Flash
Multi : Stroboscopic flash
Number of flashes
Flash frequency
09
06
07
12
08
10
11
05
13
04
03
02
01
14
SYNC
- 29 - - 30 -

RST
SET
01. Catchlight Panel
02. Built-in Wide Panel
03. Flash Head
04. Optic Control Sensor
05. Focus Assist Beam
06. Wireless Control Port
07. Sync Cord Jack
08. Hotshoe
09. Dot-marix LCD Panel
10. Lock Ring
11. Battery Compartment
12. USB Port
13. Slave Flash Ready Indicator
14. External Power Supply Socket
● Body
15. <MODE> Mode Selection
Button / Lock button
16. < >Wireless Selection
Button
17. Select Dial
18. <SET> Set Button
19. ON/OFF Power Switch
20. < > Test Button / Flash
Ready Indicator
21. Function Button 1
22. Function Button 2
23. Function Button 3
24. Function Button 4
● Control Panel
● LCD Panel
Name of Parts
21
22 23
15
20 18
19
16
24
17
(1) TTL Autoflash
Zoom : zoom display (Page 44)
: Automatic
: Manual(Page 35)
TTL : TTL autoflash
Focus length (Page 44)
: High-speed sync
(Page 34)
: Flash exposure
compensation (Page 33)
Distance indicator
display
Flash exposure
compensation amount
(2) M Manual Flash
● The display will only show the settings currently applied.
● The functions displayed above function buttons 1 to 4, such
as and , change according to settings’ status.
● When a button or dial is operated, the LCD panel
illuminated.
M : Manual flash
Manual flash output
(3) Multi Stroboscopic Flash
Multi : Stroboscopic flash
Number of flashes
Flash frequency
09
06
07
12
08
10
11
05
13
04
03
02
01
14
SYNC
- 29 - - 30 -

● Separately Sold Accessories
The product can be used in combination with the following
accessories sold separately, so as to achieve best photography
effects:
X1T-F wireless flash trigger, FT-16S power & trigger control, Mini
softbox, White & Silver reflector, Honeycomb, Color gels, Snoot, etc.
● What’s in the Box of TT685F?
1. Flash unit 2. Mini stand 3. Protection case 4. Instruction manual
Flash mode
: Group flash (radio transmission)Gr
Channel
: Radio transmission
wireless shooting
(4) Radio Transmission Shooting
● Master Unit
● Slave Unit
: Slave
: Slave icon
C.Fn
C.Fn
Attaching to a Camera
Attach the Camera Flash.
1● Slip the camera flash’s
mounting foot into the
camera’s hotshoe all the
way.
Secure the Camera Flash.
2● Rotate the lock ring on the
mounting foot until it locks
up.
Detach the Camera Flash.
3● Rotate the lock ring on the
mounting foot 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 60
minutes (adjustable, 30 minutes by default) of idle use. Pressing
any flash button will wake it up.
Disabling Auto Power Off function is recommended
when the flash is used off camera. (C.Fn-APO, Page 45)
Slave Auto Power Off Timer is set to 60 minutes by
default. Another option “30 minutes” is available.
(C.Fn-Sv APOT, Page 45)
Firing group
FEC
- 31 - - 32 -

● Separately Sold Accessories
The product can be used in combination with the following
accessories sold separately, so as to achieve best photography
effects:
X1T-F wireless flash trigger, FT-16S power & trigger control, Mini
softbox, White & Silver reflector, Honeycomb, Color gels, Snoot, etc.
● What’s in the Box of TT685F?
1. Flash unit 2. Mini stand 3. Protection case 4. Instruction manual
Flash mode
: Group flash (radio transmission)Gr
Channel
: Radio transmission
wireless shooting
(4) Radio Transmission Shooting
● Master Unit
● Slave Unit
: Slave
: Slave icon
C.Fn
C.Fn
Attaching to a Camera
Attach the Camera Flash.
1● Slip the camera flash’s
mounting foot into the
camera’s hotshoe all the
way.
Secure the Camera Flash.
2● Rotate the lock ring on the
mounting foot until it locks
up.
Detach the Camera Flash.
3● Rotate the lock ring on the
mounting foot 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 60
minutes (adjustable, 30 minutes by default) of idle use. Pressing
any flash button will wake it up.
Disabling Auto Power Off function is recommended
when the flash is used off camera. (C.Fn-APO, Page 45)
Slave Auto Power Off Timer is set to 60 minutes by
default. Another option “30 minutes” is available.
(C.Fn-Sv APOT, Page 45)
Firing group
FEC
- 31 - - 32 -

Flash Mode: TTL Autoflash
This flash has three flash modes: TTL, Manual (M), and Multi
(Stroboscopic). In 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, etc.
* Press <MODE> Mode Selection Button and three flash modes will
display on the LCD panel one by one with each pressing.
TTL Mode
Press <MODE> Mode Selection Button to enter TTL mode. The
LCD panel will display <TTL>.
● 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:
Set the flash exposure
2compensation 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”.
Press < SET > button again
3to confirm the setting.
Press Function Button 2
1< >. The icon < >
and flash exposure
compensation amount will be
highlighted on the LCD
panel.
High-Speed Sync
High Speed Sync (Hss 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.
● Setting the flash to High-speed Sync mode when it is on the camera:
Use the Flash Setting ＞ Flash Light Function Setting on the
camera’s shooting menu to adjust settings of the flash light. More
details please refer to camera’s instruction menu.
● When choosing FP on the “SYNC” setting, it means the
high-speed sync function is turned on.
SYNC.MODE
TTL ±0
-5.0+5.0
TTL MODE TTL
ZOOM M 16mm
LED AF
SYNC.
ANGLE
FP
BACK
ADJUST END
SHOE MOUNT FLASH
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.
● Setting second-curtain sync:
Use the Flash Setting ＞Flash Light Function Setting on the
camera’s shooting menu to adjust settings of the flash light. More
details please refer to camera’s instruction menu.
● When choosing REAR on the “SYNC” setting, it means the
second-curtain sync function is turned on.
● With high-speed sync, the faster the shutter speed, the
shorter the effective flash range.
● Multi flash mode cannot be set in high-speed sync mode.
● Over-temperature protection may be activated after 15
consecutive high-speed sync flashes.
SYNC.MODE
TTL ±0
-5.0+5.0
TTL MODE TTL
ZOOM M 16mm
LED AF
SYNC.
ANGLE
REAR
BACK
ADJUST END
SHOE MOUNT FLASH
- 33 - - 34 -

Flash Mode: TTL Autoflash
This flash has three flash modes: TTL, Manual (M), and Multi
(Stroboscopic). In 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, etc.
* Press <MODE> Mode Selection Button and three flash modes will
display on the LCD panel one by one with each pressing.
TTL Mode
Press <MODE> Mode Selection Button to enter TTL mode. The
LCD panel will display <TTL>.
● 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:
Set the flash exposure
2compensation 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”.
Press < SET > button again
3to confirm the setting.
Press Function Button 2
1< >. The icon < >
and flash exposure
compensation amount will be
highlighted on the LCD
panel.
High-Speed Sync
High Speed Sync (Hss 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.
● Setting the flash to High-speed Sync mode when it is on the camera:
Use the Flash Setting ＞ Flash Light Function Setting on the
camera’s shooting menu to adjust settings of the flash light. More
details please refer to camera’s instruction menu.
● When choosing FP on the “SYNC” setting, it means the
high-speed sync function is turned on.
SYNC.MODE
TTL ±0
-5.0+5.0
TTL MODE TTL
ZOOM M 16mm
LED AF
SYNC.
ANGLE
FP
BACK
ADJUST END
SHOE MOUNT FLASH
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.
● Setting second-curtain sync:
Use the Flash Setting ＞Flash Light Function Setting on the
camera’s shooting menu to adjust settings of the flash light. More
details please refer to camera’s instruction menu.
● When choosing REAR on the “SYNC” setting, it means the
second-curtain sync function is turned on.
● With high-speed sync, the faster the shutter speed, the
shorter the effective flash range.
● Multi flash mode cannot be set in high-speed sync mode.
● Over-temperature protection may be activated after 15
consecutive high-speed sync flashes.
SYNC.MODE
TTL ±0
-5.0+5.0
TTL MODE TTL
ZOOM M 16mm
LED AF
SYNC.
ANGLE
REAR
BACK
ADJUST END
SHOE MOUNT FLASH
- 33 - - 34 -

The flash output is adjustable from 1/1 full power to 1/128th power
in 1/3rd stop increments. To obtain a correct flash exposure, use a
hand-held flash meter to determine the required flash output.
Flash Mode -- M: Manual Flash
Press < MODE > button so
1that < M > is displayed.
Turn the Select Dial to choose
2a desired flash output amount.
Press < SET > button again to
3confirm the setting.
Figures displayed when reducing flash output level
Figures displayed when increasing flash output level
1/41/21/1
1/1-0.3
1/2+0.7
1/1-0.7
1/2+0.3
1/2-0.3
1/4+0.7
1/2-0.7
1/4+0.3
······
······
Flash Output Range
The following table makes it easier to see how the stop changes in
terms of f/stop when you increase or decrease the flash output. For
example, when you decrease the flash output to 1/2, 1/2-0.3, or 1/2-
0.7, and then increase the flash output to more than 1/2, 1/2+0.3,
1/2+0.7, and 1/1 will be displayed.
Optical S1 Secondary Unit Setting
In M manual flash mode, press Function Button 3 < > 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.
Optical S2 Secondary Unit Setting
Press Function Button 3 < > 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 optical triggering is only available in M manual
flash mode.
Manual Off Camera High-speed Setting
In M manual flash mode, press Function Button 4< > button to
select high-speed mode and is displayed.
Set the flash frequency and
3flash times.
● Press Function Button 3
< > to select the flash
times. Turn the Select Dial to
set the number.
● Press Function Button 4
< > 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.
Flash Mode -- 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
1that < > is displayed.
Turn the Select Dial to choose
2a desired flash output.
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
SYNC
Hz
MULTI
- 35 - - 36 -
S1/S2
S1/S2

The flash output is adjustable from 1/1 full power to 1/128th power
in 1/3rd stop increments. To obtain a correct flash exposure, use a
hand-held flash meter to determine the required flash output.
Flash Mode -- M: Manual Flash
Press < MODE > button so
1that < M > is displayed.
Turn the Select Dial to choose
2a desired flash output amount.
Press < SET > button again to
3confirm the setting.
Figures displayed when reducing flash output level
Figures displayed when increasing flash output level
1/41/21/1
1/1-0.3
1/2+0.7
1/1-0.7
1/2+0.3
1/2-0.3
1/4+0.7
1/2-0.7
1/4+0.3
······
······
Flash Output Range
The following table makes it easier to see how the stop changes in
terms of f/stop when you increase or decrease the flash output. For
example, when you decrease the flash output to 1/2, 1/2-0.3, or 1/2-
0.7, and then increase the flash output to more than 1/2, 1/2+0.3,
1/2+0.7, and 1/1 will be displayed.
Optical S1 Secondary Unit Setting
In M manual flash mode, press Function Button 3 < > 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.
Optical S2 Secondary Unit Setting
Press Function Button 3 < > 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 optical triggering is only available in M manual
flash mode.
Manual Off Camera High-speed Setting
In M manual flash mode, press Function Button 4< > button to
select high-speed mode and is displayed.
Set the flash frequency and
3flash times.
● Press Function Button 3
< > to select the flash
times. Turn the Select Dial to
set the number.
● Press Function Button 4
< > 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.
Flash Mode -- 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
1that < > is displayed.
Turn the Select Dial to choose
2a desired flash output.
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
SYNC
Hz
MULTI
- 35 - - 36 -
S1/S2
S1/S2

Wireless Flash Shooting: Radio (2.4G) Transmission
● You can set up three slave groups for TTL autoflash shooting.
With TTL autoflash, you can easily create various lighting effects.
● Any flash settings for the slave units on the master flash in
TTL/Manual/Multi 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 TTL /M /Multi / OFF flash modes when set
as a master unit.
As a slave unit, TT685F is compatible with Godox X1 series
transmitter e.g. X1T-C(For Canon), X1T-N(For Nikon), X1T-S(For
Sony), X1T-F(For Fuji), X1T-O(For Olympus or Panasonic).
Slave Unit Setting
Master Unit Setting
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.
Press < > button so that
1< > is displayed on the
LCD panel. If < MULTI>
is displayed, it means Multi
mode is ON.
The backlight turns green
2now.
Press < > button so that
1< > and < > are
displayed on the LCD panel.
The backlight turns orange
2now.
● Even with multiple slave units, the master unit 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.
Press Function Button 4
1< > to choose the
group from M/A/B/C. Then,
press Function Button 3
<MODE> so that the master
unit can work in OFF/TTL/M
flash mode. Choose one of
them as the flash mode of
master unit.
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.
Press Function Button 3
1< > and turn the
Select Dial to choose a
channel ID from 1 to 32.
Press the <SET> button to
2confirm.
2. Setting Master Unit’s Flash Mode
Gr
CH
Press < > button to
2switch to Multi mode.
Autoflash Shooting with One Slave Unit
5. TTL: Fully Automatic Wireless Flash Shooting
Master Unit Setting
1● Attach a TT685F camera
flash on the camera and
set it as the master unit.
(Page 37)
● M/A/B/C can be set as
TTL mode independently.
60-200
1/4
1/8
1/16
1/32
1/64
1/128
Hz 1
7
14
30
60
90
100
2
6
14
30
60
90
100
3
5
12
30
60
90
100
4
4
10
20
50
80
100
5
4
8
20
50
80
100
6-7
3
6
20
40
70
90
8-9
3
5
10
30
60
80
10
2
4
8
20
50
70
11
2
4
8
20
40
70
2
4
8
20
40
60
2
4
8
18
35
50
12-14
2
4
8
12
20
40
2
4
8
16
30
40
20-50
15-19
Maximum Stroboscopic Flashes:
Flash
output
- 37 - - 38 -
4. Wireless ID Settings
Change the wireless channels and wireless ID to avoid interference
for it can only be triggered after the wireless IDs and channels of the
master unit and the slave unit are set to the same.
Press the <MENU> button to enter C.Fn ID. Press the <SET> button
to choose OFF channel expansion shutdown, and choose any figure
from 01 to 99.

Wireless Flash Shooting: Radio (2.4G) Transmission
● You can set up three slave groups for TTL autoflash shooting.
With TTL autoflash, you can easily create various lighting effects.
● Any flash settings for the slave units on the master flash in
TTL/Manual/Multi 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 TTL /M /Multi / OFF flash modes when set
as a master unit.
As a slave unit, TT685F is compatible with Godox X1 series
transmitter e.g. X1T-C(For Canon), X1T-N(For Nikon), X1T-S(For
Sony), X1T-F(For Fuji), X1T-O(For Olympus or Panasonic).
Slave Unit Setting
Master Unit Setting
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.
Press < > button so that
1< > is displayed on the
LCD panel. If < MULTI>
is displayed, it means Multi
mode is ON.
The backlight turns green
2now.
Press < > button so that
1< > and < > are
displayed on the LCD panel.
The backlight turns orange
2now.
● Even with multiple slave units, the master unit 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.
Press Function Button 4
1< > to choose the
group from M/A/B/C. Then,
press Function Button 3
<MODE> so that the master
unit can work in OFF/TTL/M
flash mode. Choose one of
them as the flash mode of
master unit.
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.
Press Function Button 3
1< > and turn the
Select Dial to choose a
channel ID from 1 to 32.
Press the <SET> button to
2confirm.
2. Setting Master Unit’s Flash Mode
Gr
CH
Press < > button to
2switch to Multi mode.
Autoflash Shooting with One Slave Unit
5. TTL: Fully Automatic Wireless Flash Shooting
Master Unit Setting
1● Attach a TT685F camera
flash on the camera and
set it as the master unit.
(Page 37)
● M/A/B/C can be set as
TTL mode independently.
60-200
1/4
1/8
1/16
1/32
1/64
1/128
Hz 1
7
14
30
60
90
100
2
6
14
30
60
90
100
3
5
12
30
60
90
100
4
4
10
20
50
80
100
5
4
8
20
50
80
100
6-7
3
6
20
40
70
90
8-9
3
5
10
30
60
80
10
2
4
8
20
50
70
11
2
4
8
20
40
70
2
4
8
20
40
60
2
4
8
18
35
50
12-14
2
4
8
12
20
40
2
4
8
16
30
40
20-50
15-19
Maximum Stroboscopic Flashes:
Flash
output
- 37 - - 38 -
4. Wireless ID Settings
Change the wireless channels and wireless ID to avoid interference
for it can only be triggered after the wireless IDs and channels of the
master unit and the slave unit are set to the same.
Press the <MENU> button to enter C.Fn ID. Press the <SET> button
to choose OFF channel expansion shutdown, and choose any figure
from 01 to 99.

Setting <Multi>
1stroboscopic flash.
● Press <MODE> button so
that < MULTI> is
displayed.
● Setting the stroboscopic
flash.
Slave Unit Setting
2● Set the other camera
flash as the wireless slave
unit. (Page 38)
● The slave unit can be set
as A/B/C.
Check the communication
3channel
● If the master unit and
slave unit(s) are set to a
different channel, set them
to the same channel.
(Page 38)
Position the camera and
4flashes
● Position the camera and
flashes as the picture
shows. (Page 41)
Check that the flash is
5ready
● Check that the master
flash ready indicator is
lightened.
● When the slave flash
ready indicator is ready,
the AF-assist beam
lighting area will blinks at
1 second intervals.
Check the flash operation
6● Press the master unit’s
Test Button < >.
● Then, the slave unit will
fire. If not, check whether
the slave unit is put in the
right position or not.
The slave unit might be out of order or fire an unwanted flash
due to the nearby fluorescent lamp or computer screen.
● If the slave unit’s auto power off function is workable, press
the master unit’s test button to power it on. Please note that
test firing is unavailable during the camera’s regular
metering time.
● The effective time of slave auto power off is changeable.
(C.Fn-Sv APOT/ Page 45)
● By making some settings, the auto AF-assist transmitter will
not blink after the slave unit’s flash ready indicator is
lightened. (C.Fn-AF/ Page 45)
Using Fully Automatic Wireless Flash
The FEC and other settings that set on the master unit will also be
appeared on the slave unit automatically. The slave unit does not
need any operation. Use the following settings to make wireless
flashes according to the same methods with normal flash shooting.
● Flash Exposure Compensation （ / Page 33）
About Master Unit
Use two or more master units. By preparing several cameras that
with master units flash attached, cameras can be changed in
shooting while keeping the same lighting source (slave unit).
6. M: Wireless Flash Shooting with Manual Flash
This describes wireless (multiple shooting) using manual flash. You
can shoot with a different flash output setting for each slave unit
(firing group). Set all parameters on the master unit.
Gr
Setting the flash mode to
1<M>
● Press Function Button 4
< > to choose groups.
Then, press Function
Button 3 < MODE > to set
the flash to M mode.
Setting flash output
2● When choosing the state
of the group, press
Function Button 2 < >
to set the power output.
Turn the Select Dial to set
the flash output of the
groups. Press the <SET>
button to confirm.
Taking the picture
3● Each group fires at the set
flash ratio.
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 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 master unit to <TTL>.
7. Multi: Manual Wireless Flash Shooting
- 39 - - 40 -

Setting <Multi>
1stroboscopic flash.
● Press <MODE> button so
that < MULTI> is
displayed.
● Setting the stroboscopic
flash.
Slave Unit Setting
2● Set the other camera
flash as the wireless slave
unit. (Page 38)
● The slave unit can be set
as A/B/C.
Check the communication
3channel
● If the master unit and
slave unit(s) are set to a
different channel, set them
to the same channel.
(Page 38)
Position the camera and
4flashes
● Position the camera and
flashes as the picture
shows. (Page 41)
Check that the flash is
5ready
● Check that the master
flash ready indicator is
lightened.
● When the slave flash
ready indicator is ready,
the AF-assist beam
lighting area will blinks at
1 second intervals.
Check the flash operation
6● Press the master unit’s
Test Button < >.
● Then, the slave unit will
fire. If not, check whether
the slave unit is put in the
right position or not.
The slave unit might be out of order or fire an unwanted flash
due to the nearby fluorescent lamp or computer screen.
● If the slave unit’s auto power off function is workable, press
the master unit’s test button to power it on. Please note that
test firing is unavailable during the camera’s regular
metering time.
● The effective time of slave auto power off is changeable.
(C.Fn-Sv APOT/ Page 45)
● By making some settings, the auto AF-assist transmitter will
not blink after the slave unit’s flash ready indicator is
lightened. (C.Fn-AF/ Page 45)
Using Fully Automatic Wireless Flash
The FEC and other settings that set on the master unit will also be
appeared on the slave unit automatically. The slave unit does not
need any operation. Use the following settings to make wireless
flashes according to the same methods with normal flash shooting.
● Flash Exposure Compensation （ / Page 33）
About Master Unit
Use two or more master units. By preparing several cameras that
with master units flash attached, cameras can be changed in
shooting while keeping the same lighting source (slave unit).
6. M: Wireless Flash Shooting with Manual Flash
This describes wireless (multiple shooting) using manual flash. You
can shoot with a different flash output setting for each slave unit
(firing group). Set all parameters on the master unit.
Gr
Setting the flash mode to
1<M>
● Press Function Button 4
< > to choose groups.
Then, press Function
Button 3 < MODE > to set
the flash to M mode.
Setting flash output
2● When choosing the state
of the group, press
Function Button 2 < >
to set the power output.
Turn the Select Dial to set
the flash output of the
groups. Press the <SET>
button to confirm.
Taking the picture
3● Each group fires at the set
flash ratio.
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 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 master unit to <TTL>.
7. Multi: Manual Wireless Flash Shooting
- 39 - - 40 -

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.
You can divide the slave 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 5 groups.
Wireless Multiple Flash Shooting
A
B
A
B
C
● Auto Shooting with Two Slave Groups
● Auto Shooting with Three Slave Groups
Positioning and Operation Range (Example of wireless flash
shooting)
● Autoflash Shooting with One Slave Unit
Other Applications
Wireless Control Function
The flash unit is built in with a Wireless Control Port so that you can
wirelessly adjust the power level of the flash and the flash triggering.
To control the flash wirelessly, you need a FT-16S remote
control set (on-camera and on-flash). Insert its receive
end into the Wireless Control Port on the flash and
insert the transmit end into the camera hot shoe.
Settings made on the hotshoe-mounted transmit and
receive ends will be wirelessly communicated to the
flash. Then you can press the camera shutter
release button to trigger the flash. You can
also hold the transmit end at
hand to control your off-camera
flash.
For full instructions on the use of FT series remote control, see its user
manual.
Sync Triggering
The Sync Cord Jack is a Φ3.5mm plug. Insert a trigger plug here
and the flash will be fired synchronously with the camera shutter.
Auto Focus Assist Beam
In poorly-lit or low-contrast shooting environments, the built-in auto
focus assist beam will automatically light on to make it easier for
autofocus. The beam will light up only when autofocus is difficult
and get out as soon as the autofocus becomes correct.
If you want to turn off the auto focus assist beam, set the “AF” to
“OFF” on the C.Fn settings.
● If you find the auto focus assist beam does not light up, this
is because the camera has got a correct autofocus.
● The auto focus assist beam can only start up in the slow
shutter.
Position
Center
Periphery
Effective Range
0.6~10m / 2.0~32.8 feet
0.6~5m / 2.0~16.4 feet
- 41 - - 42 -
The Reason & Solution of Not Triggering in Godox 2.4G Wireless
1. Disturbed by the 2.4G signal in outer environment (e.g. wireless base
station, 2.4G wifi router, Bluetooth, etc.)
→ To adjust the channel CH setting on the flash trigger (add 10+ channels) and
use the channel which is not disturbed. Or turn off the other 2.4G equipment in
working.
2. Please make sure that whether the flash has finished its recycle or caught
up with the continuous shooting speed or not(the flash ready indicator is
lighten) and the flash is not under the state of over-heat protection or
other abnormal situation.
→Please downgrade the flash power output. If the flash is in TTL mode, please
try to change it to M mode(a preflash is needed in TTL mode).
3. Whether the distance between the flash trigger and the flash is too close
or not
→Please turn on the “close distance wireless mode” on the flash trigger (＜0.5m):
X1 series: press the test button and hold on, then turning it on until the flash
ready indicator blinks for 2 times.
XPro series: Set the C.Fn-DIST to 0-30m.
4. Whether the flash trigger and the receiver end equipment are in the low
battery states or not
→Please replace the battery(the flash trigger is recommended to use 1.5V
disposable alkaline battery).

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.
You can divide the slave 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 5 groups.
Wireless Multiple Flash Shooting
A
B
A
B
C
● Auto Shooting with Two Slave Groups
● Auto Shooting with Three Slave Groups
Positioning and Operation Range (Example of wireless flash
shooting)
● Autoflash Shooting with One Slave Unit
Other Applications
Wireless Control Function
The flash unit is built in with a Wireless Control Port so that you can
wirelessly adjust the power level of the flash and the flash triggering.
To control the flash wirelessly, you need a FT-16S remote
control set (on-camera and on-flash). Insert its receive
end into the Wireless Control Port on the flash and
insert the transmit end into the camera hot shoe.
Settings made on the hotshoe-mounted transmit and
receive ends will be wirelessly communicated to the
flash. Then you can press the camera shutter
release button to trigger the flash. You can
also hold the transmit end at
hand to control your off-camera
flash.
For full instructions on the use of FT series remote control, see its user
manual.
Sync Triggering
The Sync Cord Jack is a Φ3.5mm plug. Insert a trigger plug here
and the flash will be fired synchronously with the camera shutter.
Auto Focus Assist Beam
In poorly-lit or low-contrast shooting environments, the built-in auto
focus assist beam will automatically light on to make it easier for
autofocus. The beam will light up only when autofocus is difficult
and get out as soon as the autofocus becomes correct.
If you want to turn off the auto focus assist beam, set the “AF” to
“OFF” on the C.Fn settings.
● If you find the auto focus assist beam does not light up, this
is because the camera has got a correct autofocus.
● The auto focus assist beam can only start up in the slow
shutter.
Position
Center
Periphery
Effective Range
0.6~10m / 2.0~32.8 feet
0.6~5m / 2.0~16.4 feet
- 41 - - 42 -
The Reason & Solution of Not Triggering in Godox 2.4G Wireless
1. Disturbed by the 2.4G signal in outer environment (e.g. wireless base
station, 2.4G wifi router, Bluetooth, etc.)
→ To adjust the channel CH setting on the flash trigger (add 10+ channels) and
use the channel which is not disturbed. Or turn off the other 2.4G equipment in
working.
2. Please make sure that whether the flash has finished its recycle or caught
up with the continuous shooting speed or not(the flash ready indicator is
lighten) and the flash is not under the state of over-heat protection or
other abnormal situation.
→Please downgrade the flash power output. If the flash is in TTL mode, please
try to change it to M mode(a preflash is needed in TTL mode).
3. Whether the distance between the flash trigger and the flash is too close
or not
→Please turn on the “close distance wireless mode” on the flash trigger (＜0.5m):
X1 series: press the test button and hold on, then turning it on until the flash
ready indicator blinks for 2 times.
XPro series: Set the C.Fn-DIST to 0-30m.
4. Whether the flash trigger and the receiver end equipment are in the low
battery states or not
→Please replace the battery(the flash trigger is recommended to use 1.5V
disposable alkaline battery).

Bounce Flash
By pointing the flash head toward a wall or ceiling, the flash will
bounce off the surface before illuminating the subject. This can
soften shadows behind the subject for a more natural-looking shot.
This is called bounce flash.
To set the bounce direction, hold the flash head and turn it to a
satisfying angle.
360
-7-90
● If the wall or ceiling is too far away, the bounced flash might
be too weak and result in underexposure.
● The wall or the ceiling should be a plain, white color for
high reluctance. If the bounce surface is not white, a color
cast may appear in the picture.
Creating a Catchlight
With the catchlight panel, you can create a catchlight in the subject’s
eyes to add life to the facial expression.
Point the flash head upward
1by 90°.
Pull out the wide panel. The
2catchlight panel will come out
at the same time.
Push the wide panel back in.
3
● Push in only the wide panel.
● Follow the same procedures
as for bounce flash.
● Point the flash head straight ahead and then upward by
90°. The catchlight will not appear if you swing the flash
head left or right.
● For best catchlight effect, stay 1.5m/4.9ft away from the
subject.
ZOOM: Setting the Flash Coverage and Using
the Wide Panel
The flash coverage can be set automatically or manually. It can be
set to match the lens focal length from 20 mm to 200mm (135
system). Also, with the built-in wide panel, the flash coverage can
be expanded for 12mm wide-angle lenses.
Choose APS or 135 system in the C.Fn-AP.
In Manual Zoom mode, press the
<ZOOM/C.FN> button.
● Turn the Select Dial to change
the flash coverage.
● If < > is displayed, the flash
coverage will be set
automatically.
If you set the flash coverage manually, make sure it covers
the lens focal length so that the picture will not have a dark
periphery.
Using the Wide Panel
Pull out the wide panel and place it
over the flash head as shown. The
flash coverage will then be extended
to 12 mm.
● The catchlight panel will come out
at the same time. Push the
catchlight panel back in.
● The <ZOOM/C.FN> button will not
work.
Low Battery Warning
If the battery power is low, < >
will appear and blink on the LCD
panel. Please replace the battery
immediately.
- 43 - - 44 -