Godox TT685IIC User manual

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 indicates a warning to prevent shooting problem.
The Note symbol gives supplemental information.
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Thank you for purchasing this product.
This TT685IIC camera flash applies to Canon EOS series cameras
and is compatible with E-TTL II autoflash. With this E-TTL II
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:
●Approx. GN60 (m ISO 100, @200mm), 81 steps from 1/1 to 1/128.
●Fully support Canon E-TTL II camera flash. Workable as
Transmitter or Receiver 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), FEC,
FEB, etc.
●Stable consistency and color temperature with good even
lighting.
●Support with firmware upgrade.
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.
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- 25 - - 26 -
Thinklite TTL Camera Flash
Godox
TT685IIC

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Foreword
Warning
Name of Parts
Body
Control Panel
Dot-matrix LCD Panel
LCD Panel in Three Modes
What's in the Box of TT685IIC Kit?
Separately Sold Accessories
Attaching to a Camera
Power Management
Flash Mode — E-TTL Autoflash
FEC (Flash Exposure Compensation)
FEB (Flash Exposure Bracketing)
FEL: Flash Exposure Lock
High-Speed Sync
Second-Curtain Sync
M: Manual Flash
Multi: Stroboscopic Flash
Wireless Flash Shooting: Radio (2.4G) Transmission
Wireless Settings
Transmitter Unit's Flash OFF
Setting the Communication Channel
Wireless ID Settings
Scan the Spare Channel
ETTL: Fully Automatic Wireless Flash Shooting
ETTL: Use the Wireless Flash Shooting of Flash Ratio
M: Wireless Flash Shooting with Manual Flash
Multi: Wireless Flash Shooting with Manual Flash
Other Applications
Sync Triggering
Modeling Flash
Auto Focus Assist Beam
Bounce Flash
ZOOM: Setting the Flash Coverage
Low Battery Indicator
C.Fn: Setting Custom Functions
Control with the Camera's Menu Screen
Protection Function
Technical Data
Troubleshooting
Firmware Upgrade
Compatible Camera Models
Maintenance
31
32
35
40
40
41
44
45
46
53
55
56
57
58
59
60
60
60
01. Flash Head
02. LED Modeling Lamp(01~10)
03. Focus Assist Beam
04. Wireless Sensor
05. Sync Cord Jack
06. Type-C USB Port
●#PEZ
07. Battery Remove Button
08. Hotshoe
09. LCD Panel
10. Hotshoe Fixing Buckle
11. Lithium Battery
12. TTL/M Shortcut
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11.<MENU>Flash Menu
Button/Locking Button
12. < >Wireless Selection
Button
13. Select Dial
14. Set Button
15. ON/OFF Power Switch
16. < > Test Button / Flash
Ready Indicator
17. <ZOOM> Focus Length Setting
18. <MODE>Mode Selection Button
19. < >Lock Setting
20. <+/->Power Output
21. Function Button 1
22. Function Button 2
23. Function Button 3
24. Function Button 4
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- 27 - - 28 -

●LCD Panel
(1)E-TTL Autoflash
Zoom : zoom display (Page 54)
: Automatic
: Manual(Page 44)
ETTL : E-TTL II
autoflash
Focus length (Page 54)
: High-speed sync
(Page 43)
: Second curtain
sync (Page 43)
: Flash exposure
compensation (Page 41)
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 and <A/B/C/D> , change according to settings’ status.
●The LCD panel will lighten on when buttons and dials are
operated.
SYNC
(2)M Manual Flash
M: Manual flash
Manual flash output
(3)Multi Flash
Multi : Stroboscopic flash
Number of flashes
Flash frequency
(4) Radio Transmission Shooting
: Transmitter unit
flash ON
: Transmitter unit
flash OFF
: Radio transmission
wireless shooting
●Transmitter Unit (TX)
Firing group
Channel
Flash mode
CH
●Receiver Unit (RX)
: Receiver
●What’s in the Box of TT685IIC Kit?
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12 34
●LCD Panel in Three Modes
●Attached to the Camera
●2.4G Radio Transmission: As a Transmitter Unit
RX
CH
The product can be used in combination with the following
accessories sold separately, so as to achieve best photography
effects: XProC, X2T-C & X1C TTL wireless flash trigger, etc.
●Separately Sold Accessories
4&5 
:Receiver icon
●2.4G Radio Transmission: As a Receiver Unit
Effective
Flash Range
- 29 - - 30 -

1
2
3
Press the <+/-> button. The
icon < > and flash exposure
compensation amount will be
highlighted on the LCD panel.
Press Set Button again to
confirm the setting.
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”.
Attach the Camera Flash. 
Secure the Camera Flash.
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●Rotate the hotshoe
fixing buckle to the left
and insert the camera
flash into the camera's
hotshoe.
●Rotate the hotshoe
fixing buckle to the right
until it locks up.
Detach the Camera Flash.
●Press the button and
rotate the hotshoe
fixing buckle to the left
until it is loosened.
1
2
3
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1
This flash has three flash modes: E-TTL, Manual (M), and Multi
(Stroboscopic). In E-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, FEB, FEL, HSS, second curtain sync, modeling flash, control
with the camera’s menu screen.
* Press < MODE > Mode Selection Button and three flash modes will
display on the LCD panel one by one with each pressing.
ETTL Mode
Press < MODE > Mode Selection Button to enter E-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.
●Loading and Unloading the Battery
To unload the battery, hold
down the battery and press
compartment and push the
battery downwardly to take it
out.
2
Put 4 batteries in with the
correct polarity after opening
the battery compartment,
then close and push it to the
top.
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
transmitter 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 receiver 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.
Disabling Auto Power Off function is recommended
when the flash is used off camera. (C.Fn-STBY, Page 55)
Receiver Auto Power Off Timer is set to 60 minutes by
default. Another option “30 minutes” is available. (55)
C.Fn
C.Fn
FEB: Flash Exposure Bracketing
You can take three flash shots while automatically changing the
flash output for each shot from -3 to +3 in 1/3rd stops. The camera
will record three images with different exposures: one exposed
according to camera calculations, one over-exposed and another
under-exposed. Over and under exposure amount is user
adjustable. This function helps get correct exposure especially in
shooting moving objects or when environmental lights are
complex.
FEC Setting：
- 31 - - 32 -

Press function button 2 < >
button so that < > is displayed
on the LCD panel.
●If you set a shutter speed that is the same as or slower
than the camera’s maximum flash sync speed, < >
will not be displayed in the viewfinder.
●With high-speed sync, the faster the shutter speed, the
shorter the effective flash range.
●To return to normal flash, press < > button again.
Then < > 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.
1
2
1
2
3
Press function button 3
< >. The icon < >
and the exposure bracketing
amount will be highlighted
on the LCD panel.
Press Set Button again to
confirm the setting. Then
your FEC and FEB settings
are displayed on the LCD
panel.
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.
1
Press Function Button 2
< > so that < > is
displayed.
2
Check that < > is displayed
in theviewfinder.
●FEB will be cancelled after three photos are taken.
●For best results, set the camera drive mode to “single” and
ensure the flash is ready before shooting.
●FEB can be used with FEC and FEL.
You can prevent the FEB from being cancelled
automatically after three photos are taken. (C.Fn-FEB
ACL , Page 55)
C.Fn
FEL: Flash Exposure Lock
FEL can lock the correct flash exposure setting for any part of the
scene.
With <ETTL> displayed on the LCD panel, press the camera’s
<FEL> button. If the camera does not have the <FEL> button, press
the < * > button.
Focus the subject.
Press the <FEL> button.
●Aim the subject at the
center of the viewfinder and
press <FEL> button.
●The camera flash will fire
a preflash and the required
flash output for the subject
is retained in memory.
●If the subject is too far away and underexposure, the < >
icon will blink in the viewfinder. Move closer to the subject
and try the FE lock again.
●If <ETTL> is not displayed on the LCD panel, FE lock
cannot be set.
●If the subject is too small, FE lock might not be very
effective.
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.
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.
High-Speed Sync
●"FEL" will display on the viewfinder for 0.5s.
●The camera flash will fire a preflash and lock the flash exposure
setting once the <FEL> button is pressed.
- 33 - - 34 -

11
2
3
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Optic S1 Secondary Unit Setting
Optic S2 Secondary Unit Setting
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.
● S1 and S2 optic triggering is only available in Mmanual
flash mode.
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.
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
that <M>is displayed. Press <MODE> button so that
< > is displayed.
Set the flash frequency and
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.
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.
2
Turn the Select Dial to
choose a desired flash
output amount.
2
Press Set Button again to
confirm the 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.
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.
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.
- 35 - - 36 -

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1/4
1/8
1/16
1/32
1/64
1/128
1/256
Hz
Flash
output
Flash
output
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
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
60-199
2
4
8
12
20
40
40
Wireless Multiple Flash Shooting
● 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 V860IIIC attach to the camera is called the
transmitter unit, and a V860IIIC that is wirelessly
controlled is called the receiver unit.
●You can also wirelessly control the V860IIIC set as the
receiver unit with the transmitter X1T-C (sold
separately). For details on setting the transmitter unit
functions, see the transmitter’s instructions.
●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.
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 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 transmitter unit to <ETTL>.
Positioning and Operation Range (Example of wireless flash
shooting)
●Autoflash Shooting with One Receiver Unit
Transmission distance is
about 100m.
T RANSM I TT E R
RECEIVE R
You can divide the Receiver units into two or three groups and
perform E-TTL II 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.
●Auto Shooting with Two Receiver Groups
A
B
●Auto Shooting with Three Receiver Groups
A
B
C
- 37 - - 38 -

1
Press <MENU> Button to enter
C.Fn Transmitter setting.
1
Press <MENU> Button to enter
C.Fn CH setting.
2
In C.Fn CH, turn the Select Dial
to choose channel ID from 1 to
32.
3
Press the Set Button to confirm.
2
Set Transmitter to ON/OFF to
control the On/Off of the
Transmitter unit.
< >：The Transmitter unit
flash firing is ON.
< >：The Transmitter unit
flash firing is OFF.
●Even if the Transmitter unit
flash firing is disabled, it still
fires a preflash to transmit
wireless signals.
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 Transmitter unit and the Receiver unit(s) must be set to the
same.
Transmitter Unit Setting
Receiver Unit Setting
Using Automatic Wireless Flash with a Single Receiver Unit
●Shooting with a Different Flash Mode set for Each Group
Ceiling
Auto external
test flash
E-TTL II
Manualflash
Manualflash
A
C
D
B
* The flash mode settings are indicated only as an example
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
< > is displayed on the
LCD panel.
Press < > button so that
< > or < > are
displayed on the LCD panel.
2. Transmitter Unit’s Flash OFF
When the Transmitter unit is set to OFF, only the Receiver units will
fire a flash.
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 Transmitter unit and the Receiver 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.
5. Scan the Spare Channel
6. ETTL：Fully Automatic Wireless Flash Shooting
To avoid the interference of using the same channel by others, this
function can be used: enter the C.Fn settings and find the SCAN
option. When setting it to START, it will scan from 1% to 100%. And
the 8 spare channels will be displayed after the scan is completed.
Ver 0.5
22 0 8 3 2 2 3
30 2 1 0 7 0 6
C.Fn
CLEAR
CH
ID
BEEP
SCAN
- 39 - - 40 -

1
Using Automatic Wireless Flash with Multiple Receiver Units
Using Fully Automatic Wireless Flash
About the Transmitter Unit
Transmitter Unit Setting
●Attach a TT685IIC camera
flash on the camera and set
it as the Transmitter unit.
●X1T-C can also be used
as Transmitter unit. X1T-C
can control TT685IIC 's
ZOOM value when the
ZOOM is adjusted to auto
(A) mode.
Check the communication
channel.
●If the Transmitter unit and
Receiver unit(s) are set to a
different channel, set them to
the same channel. (Page 49)
Position the camera and
flashes.
●Position the camera and
flashes as the picture shows.
(Page 47)
Set the Transmitter unit’s
flash mode to <ETTL>.
●Set the Transmitter unit’s
flash mode to <
ETTL >.
●For shooting, <
ETTL > will
automatically be set for the
Receiver unit.
●Set the Transmitter unit
flash firing as
ON to fire a
flash.
Check that the flash is ready.
●Check that the Transmitter
flash ready indicator is
lightened.
●When the Receiver flash
ready indicator is ready, the
AF-assist beam lighting area
will blinks at 1 second
intervals.
Check the flash operation.
●Press the Transmitter
unit’s Test Button < >.
●Then, the Receiver unit
will fire. If not, adjust the
Receiver unit’s angle toward
the Transmitter unit and
distance from the Transmit-
ter unit.
Receiver Unit Setting
●Set wireless controlled
TT685IIC as the wireless
Receiver Unit.
CH
2
3
5
6
7
4
When stronger flash output or
more convenient lighting
operation is needed, increase the
number of Receiver units and set
it as a single Receiver unit.
To add Receiver units, use the
same steps as setting“automatic
wireless flash with a single
Receiver unit”. Any flash group
can be set (A/B/C/D/E).When the
number of Receiver units is
increased and the Transmitter
unit flash firing is ON, automatic
control is implemented to make
all groups of flashes fire the
same flash output and ensure
the total flash output up is to
standard exposure.
●Press the depth-of-field preview button on the camera
to fire a modeling flash.
●If the Receiver unit’s auto power off function is workable,
press the Transmitter 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 Receiver auto power off is
changeable. (C.Fn-RX STBY Page 55)
●By making some settings, the auto AF-assist transmitter
will not blink after the Receiver unit’s flash ready indicator
is lightened. (C.Fn-AF Page 55)
The FEC and other settings that set on the Transmitter unit will also
be appeared on the Receiver unit automatically. The Receiver unit
does not need any operation. Use the following settings to make
wireless flashes according to the same methods with normal flash
shooting.
Use two or more Transmitter units. By preparing several cameras
that with Transmitter units flash attached, cameras can be
changed in shooting while keeping the same lighting source
(Receiver unit).
●Flash Exposure Compensation ( Page 41)
●Flash Exposure Lock (Page 42)
●Manual Flash (Page 44)
●Stroboscopic Flash (Page 45)
- 41 - - 42 -

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Setting <M> Flash Mode
Setting the flash mode to
<M>.
Taking the picture.
●Each group fires at the
set flash ratio.
Setting flash output.
●Press FunctionButton
1/2/3/4<A/B/C/D>. Turn the
Select Dial to set the flash
output of the groups. Press
Set Button to confirm.
1
1
2
2
3
7. 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
Receiver unit (firing group). Set all parameters on the Transmitter
unit.
You can directly operate the Receiver unit to manually set the
manual flash or stroboscopic flash.
Setting the Receiver unit.
Setting flash mode to <M>.
●Press <MODE> button so
that <M> is displayed.
●Set the manual flash
output. (Page 44)
8. Multi: Wireless Flash Shooting with Manual Flash
1.Setting <MULTI> stroboscopic
flash.
●Press <MODE> button so that
<MULTI> is displayed.
●Setting the stroboscopic flash.
(Page 45)
CH 21
CH
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 not0.5m
→ Please turn on the “close distance wireless mode” on the flash
trigger
X2 & 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).
Sync Triggering

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.
Position
Center
Periphery
Effective Range
0.6~10m / 2.0~32.8 feet
0.6~5m / 2.0~16.4 feet
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.
- 43 - - 44 -

In Manual Zoom mode, press the
<ZOOM> button.
●Turn the Select Dial to change
the flash coverage.
●If < > is displayed, the flash
coverage will be set automati-
cally.
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q
q
Setting No.
m
ft
ON
OFF
12sec
OFF
ON
OFF
01-99
Function
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Beeper
Backlighting time
Wireless ID
Settings &
Description
m
feet
ON
OFF
Off in 12 sec.
Always off
Always lighting
Off

from 01-99
Custom
Function
Signs
m/ft
ON
OFF
AF-assist beam RX ON
OFF
AF
60min
30min
Receiver auto
power off timer 60min
30min
RX STBY
BEEP
LIGHT
ID
ON
OFF
Auto sleep setting ON
OFF
STBY
OFF
Scan the spare
channel 
channel
OFFSCAN
START
0~132Channel setting Choose channels
from 01-32
CH
●If the wall or ceiling is too far away, the bounced flash
might be too weak and result in underexposure.
●The wall or ceiling should be a plain, white color for high
reflectance. If the bounce surface is not white, a color cast
may appear in the picture.
ZOOM: Setting the Flash Coverage
The flash coverage can be set automatically or manually. It can be
set to match the lens focal length from 20mm to 200mm.
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.
Low Battery Warning
If the battery power is low, < >
will appear and blink on the LCD
panel. Please replace the battery
immediately.
The following table lists the available and unavailable custom
functions of this flash.
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Creating a Catchlight
With the catchlight panel, you can
create a catchlight in the subject’s
eyes to add life to the facial
expression.
1. Point the flash head upward by
90°.
2. Pull out the wide panel.
3. Push the wide panel back in.
●Push in only the wide panel.The
catchlight panel will come out at
the same time.
●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 maximum catchlight effect,
stay 1.5m/4.9ft away from the
subject.
- 45 - - 46 -

1. Over-Temperature Protection
●To avoid overheating and deteriorating the flash head, do not fire
more than 30 continuous flashes in fast succession at 1/1 full
power. After 30 continuous flashes, allow a rest time of at least 10
minutes.
●If you fire more than 30 continuous flashes and then fire more
flashes in short intervals, the inner over-temperature protection
function may be activated and make the recycling time over 10
seconds. If this occurs, allow a rest time of about 10 minutes, and
the flash unit will then return to normal.
●When the over-temperature protection is started, is shown on
the LCD display.
Number of flashes that will activate over-temperature protection:
ON
OFF
FEB auto
cancel
Transmitter
unit control
ON
OFF
OFF
ON
FEB ACL
TX
-~+33
LCD contrast ratio 7 levels
LCD
1/1
1/2
1/4
1/8
1/16
1/32
1/64
1/128
ZOOM
Number
of Flashes 20
40
50
100
200
300
500
1000
2000
24
50
60
100
200
300
500
1000
2000
28
50
60
100
200
300
500
1000
2000
35
60
75
100
200
300
500
1000
2000
50
60
75
120
200
300
500
1000
2000
70
75
100
150
200
300
500
1000
2000
80
75
100
150
200
300
500
1000
2000
105
80
100
150
200
300
500
1000
2000
135
80
100
150
200
300
500
1000
2000
200
80
100
150
200
300
500
1000
2000
(mm)
1/1
1/2
1/4
1/8
1/16
1/32
1/64
1/128
ZOOM 20 - 200
30
30
34
40
50
50
60
60
(mm)
Number of flashes that will activate over-temperature protection in
high-speed sync triggering mode:
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1SPUFDUJPO'VODUJPO
If the camera flash is attached to an EOS camera which has a
speedlite control function, the flash can be controlled using the
camera’s menu screen. For the menu operation procedure, refer to
your camera’s instruction manual.
●Setting Camera Flash Functions
The following flash functions are settable according to different
flash modes.
1. Flash mode
2. Shutter sync (1st/2nd curtain, high speed sync)
3. FEB
4. Flash exposure compensation
5. Flash firing
6. Clear camera flash’s settings
●Custom Functions of Camera Flash
C.Fn-00, C.Fn-01, C.Fn-03, C.Fn-08, C.Fn-10, C.Fn-20, C.Fn-22.
Clear All Flash Custom Functions
Flash function settings screen Flash C.Fn settings screen
1. Press<MENU> Button until C.Fn menu is displayed. The “Ver x.x”
in the top-right corner refers to the software version.
2. Select the Custom Function No.
●Turn the Select Dial to select the Custom Function No.
3. Change the Setting.
●Press Set Button and the Setting No. blinks.
●Turn the Select Dial to set the desired number. Pressing Set
Button will confirm the settings.
●After you set the Custom Function and press <MENU> button,
the camera will be ready to shoot.
4. In the C.Fn states, long press the “Clear”button for 2 seconds
until “OK”is displayed on the panel, which means the values in C.Fn
can be reset.
Flash C.Fn settings
Auto powe off
1
0:Enabled
1:Disabled
0 1 2 3 4 5 6 7 8 9 10 11 12 13
0 0 0 0 0 0 0 0 0 0 0 0 0 0
-
Flash function settings
Shutter sync
FEB 
FEC 
E TTL II
Flash firing
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Flash mode E-TTL//
1st curtain
3210123
-......
3210123
-......
+\GR[GZO\K
+TGHRK
-
-
* Screens from the EOS-1D Mark III.
●If flash exposure compensation has already been set with
the camera flash, flash exposure compensation cannot be
set with the camera. To set it with the camera, the camera
flash’s flash exposure compensation must be set to zero.
●If any Flash Custom Functions and flash settings other
than flash exposure compensation have been set by both
the camera and the flash, the latest settings will take effect.
Power
Output Level
Number
of Flashes
Power
Output Level
2. Other Protections
The system provides real-time protection to secure the device and
your safety. The following lists prompts for your reference:
- 47 - - 48 -

E1
E2
E3
E9
A failure occurs on the recycling system so that the
flash cannot fire.
Please restart the flash unit. If the problem still exists,
please send this product to a maintenance center.
The system gets excessive heat. Please allow a rest
time of 10 minutes.
The voltage on two outlets of the flash tube is too high.
Please send this product to a maintenance center.
There are some errors occurred during the upgrading
process. Please using the correct firmware upgrade
method.
5SPVCMFTIPPUJOH
Prompts on
LCD Panel Meaning
If there is a problem, refer to this Troubleshooting Guide.
The Camera Flash does not fire.
●The camera flash is not attached securely to the camera.
→Attach the camera’s mounting foot securely to the camera.
●The electrical contacts of the Camera Flash and camera are
dirty.
→Clean the contacts.
●< > or < > is not displayed in the view finder of camera.
→Wait until the flash is fully recycled and the flash ready
indicator lights up.
→If the flash ready indicator lights up, but < > or < > is not
displayed in the view finder, check whether this flash unit is
securely attached to the camera hotshoe.
→If the flash ready indicator does not light up after a long wait,
check whether the battery power is enough. If the battery power is
low, < > will appear and blink on the LCD panel. Please replace
the battery immediately.
The power turns off by itself.
●After 90 seconds of idle operation, auto power off took effect if
the flash is set as Transmitter.
→Press the shutter button halfway or press any flash button to
wake up.
●After 60 minutes (or 30 minutes) of idle operation, the flash unit
will enter sleep mode if it is set as Receiver.
→Press any flash button to wake up.
Auto zoom does not work.
●The camera flash is not attached securely to the camera.
→Attach the camera flash’s mounting foot to the camera.
The flash exposure is underexposed or overexposed.
●There was a highly reflective object (e.g. glass window) in the
picture.
→Use FE lock (FEL).
●You used high-speed sync.
→With high-speed sync, the effective flash range will be shorter.
Make sure the subject is within the effective flash range displayed.
●You used Manual Flash mode.
→Set the flash mode to ETTL or modify the flash output.
Photos have dark corners or only parts of the target subject are
illuminated.
●The focal length of lens exceeds the flash coverage.
→Check the flash coverage you set. This flash unit has the flash
coverage between 20 and 200mm, which fits medium-format
cameras.
Model
Compatible Cameras
Power(1/1 output)
Guide No.(1/1 output, 200mm)
Flash Coverage
TT685IIC
Canon EOS cameras (E-TTL II autoflash)
76Ws
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5FDIOJDBM%BUB
• Swinging/tilting flash head (bounce flash): 0
to 330° horizontally and -7° to 120° vertically
20 to 200mm
• Auto zoom (Flash coverage set automatically
to match the lens focal length and image size)
Flash Duration 1/300 to 1/20000 seconds
• Exposure Control
Exposure control system
FE lock
Sync mode
Multi flash Provided (up to 100 times, 199Hz)
E-TTL II autoflash and manual flash
With <FEL> button or< * > button
Flash exposure
compensation (FEC) Manual. FEB: ±3 stops in 1/3 stop increments (Manual FEC and FEB can be combined.)
High-speed sync (up to 1/8000 seconds),
first-curtain sync, and second-curtain sync
• Wireless Flash（2.4G Radio Transmission）
Wireless flash function
Transmitter groups A, B, C, D
Transmitter, Receiver, Off
Transmission range
(approx.)
Effective range (approx.) Center: 0.6~10m
Periphery: 0.6~5m
• Power Supply
Power source
Recycle time
Full power flashes
7.2V/2600mAh Li-ion battery
Approx 1.5 seconds. Green LED indicator
will light up when the flash is ready.
Power saving
Power off automatically after approx. 90 seconds
of idle operation. (60 minutes if set as Receiver)
• Sync Triggering Mode Hotshoe, 2.5mm sync line
• Dimensions
W x H x D 195*75*59 mm
410g
530g
2413.0MHz-2465.0MHz
5dbm
Weight without battery
Weight with battery
2.4G Frequency Range
Max. Transmitting Power
Manual zoom
Controllable Receiver groups A, B, C, D, E (E group can be controlled by X
series flash trigger)
100m
Channels
ID 01~99
32 (1~32)
Modeling flash
Fired with camera’s depth-of-field preview button
• Auto Focus Assist Beam
- 49 - - 50 -

'JSNXBSF6QHSBEF 'JSNXBSF6QHSBEF
This table only lists the tested camera models, not all Canon
EOS series cameras. For the compatibility of other camera
models, a self-test is recommended.
Rights to modify this table are retained.
*3GXQ/< *3GXQ// *3GXQ// * * *
* 3 3
●The USB port is a Type-C USB socket. Type-C USB connection
line is applicable.
●As the firmware upgrade needs the support of Godox G3
software, please download and install the "Godox G3 firmware
upgrade software" before upgrading. Then, choose the related
firmware file.
●As the product needs to do firmware upgrade, please refer to
instruction manual of the newest electric version as final.
This flash unit can be used on the following Canon EOS series
camera models:
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●Shut down the device immediately should abnormal operation
be detected.
●Avoid sudden impacts and the product should be dedusted
regularly.
●It is normal for the flash tube to be warm when in use. Avoid
continuous flashes if unnecessary.
●Maintenance of the flash must be performed by our authorized
maintenance department which can provide original accessories.
●This product, except consumables e.g. flash tube, is supported
with a one-year warranty.
●Unauthorized service will void the warranty.
●If the product had failures or was wetted, do not use it until it is
repaired by professionals.
●Changes made to the specifications or designs may not be
reflected in this manual.
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Any Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to
operate the equipment.
Note: This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
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- 51 - - 52 -