Godox TT685IIN Thinklite TTL Camera Flash Instruction Manual

Godox TT685IIN Thinklite TTL Camera Flash

Specifications

• Product Model : THINKLITE TTL Camera Flash
• Model Number : 705-6852NO-00
• Flash Modes : i-TTL Autoflash, Manual Flash, Stroboscopic Flash, Radio Transmission Shooting
• Wireless Compatibility : Compatible with XProC, X2T-C & X1C TTL wireless flash trigger
• Battery : Requires 4 batteries (not included)

Product Usage Instructions

Name of Parts
The product consists of the following parts

1. Flash Head
2. Built-in Wide Panel
3. Wireless Sensor
4. Focus Assist Beam
5. Sync Cord Jack
6. Type-C USB Port
7. Battery Cover
8. Hotshoe
9. LCD Panel
10. Hotshoe Fixing Buckle
11. External Charging Port
12. Flash Menu Button
13. Wireless Selection Button
14. Select Dial
15. Set Button
16. ON/OFF Power Switch
17. Test Button / Flash Ready Indicator
18. Focus Length Setting
19. Mode Selection Button
20. Lock Setting
21. Power Output
22. Function Button 1
23. Function Button 2
24. Function Button 3
25. Function Button 4

Loading and Unloading the Battery
To unload the battery

1. Hold down the battery and press the battery compartment.
2. Push the battery downwardly to take it out.

To load the battery

1. Open the battery compartment.
2. Insert 4 batteries with the correct polarity.
3. Close the battery compartment and push it to the top.

Attaching to a Camera
To attach the flash to a camea

1. Align the hotshoe of the flash with the hotshoe of the camera.
2. Slide the flash into the hotshoe.
3. Secure the flash by using the hotshoe fixing buckle.

Power Management
To manage power setting

• Disabling Auto Power Off function is recommended when using the flash off camera.
• The Receiver Auto Power Off Timer is set to 60 minutes by default. Another option of 30 minutes is available.

Flash Mode – i-TTL Autoflash
To adjust Flash Exposure Compensation (FEC)

1. Press the Flash Menu button.
2. The flash exposure compensation amount will be highlighted on the LCD panel.
3. Use the Select Dial to adjust the FEC from -3 to +3 in 1/3rd stops.
4. Press the Set Button again to confirm the setting.

High-Speed Sync
To enable High Speed Sync (FP flash)

1. Choose High Speed Sync mode.
2. Synchronize the flash with all camera shutter speeds.
3. This is useful when using aperture priority for fill-flash portraits.

FAQ

• Q: What accessories can be used with this product?
  A: The product can be used in combination with accessories such as XProC, X2T-C & X1C TTL wireless flash trigger, etc.

• Q: How can I achieve more flash times, shorter recycle time, and longer duration?
  A: When collocated with the optional Godox Flash Power Box PB960, TT685IIN will have more flash times, shorter recycle time, and longer duration.

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.

Foreword

Thank you for purchasing this product.
This TT685IIN camera flash applies to Nikon series cameras and is compatible with i-TTL II autoflash. With this i-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

• Approx. GN60 (ISO 100, @200mm), 81 steps from 1/1 to 1/256.
• Fully support i-TTL 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.

Warning

• 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.

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.

Name of Parts

Body

1. Flash Head

2. Built-in Wide Panel

3. Wireless Sensor

4. Focus Assist Beam

5. Sync Cord Jack

6. Type-C USB Port

7. Battery Cover

8. Hotshoe

9. LCD Panel

10. Hotshoe Fixing Buckle

11. External Charging Port Control Panel
    

    Flash Menu Button

12. Wireless Selection Button

13. Select Dial

14. Set Button

15. ON/OFF Power Switch

16. Test Button / Flash Ready Indicator

17. Focus Length Setting
18. 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

LCD Panel

1. TTL Autoflash Zoom : zoom display

•  The display will only show the settings currently applied.
• The functions displayed above function buttons 1 to 4, such as and <M/A/B/C> , change according to settings’ status.
• The LCD panel will lighten on when buttons and dials are operated.

M Manual Flash

RPT Flash

Radio Transmission Shooting

Transmitter Unit (TX)

Receiver Unit (RX)

LCD Panel in Three Modes

• Attached to the Camera
• 2.4G Radio Transmission : As a Transmitter Unit
• 2.4GRadio Transmission : As a Receiver Unit

What’s in the Box of TT685IIN Kit?

1. Flash Unit
2. Mini Stand
3. Protection Case
4. Instruction Manual

• Separately Sold Accessories
  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.

Loading and Unloading the Battery

1. 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.

Tips: When collocated with the optional Godox Flash Power Box PB960, TT685IIN will have more flash times, shorter recycle time and longer duration.

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 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.
Receiver Auto Power Off Timer is set to 60 minutes by default. Another option “30 minutes” is available.

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, 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.

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 1/3rdstops. It is useful in situations where minor adjusting of the TTL system is needed based on the environment.

FEC Setting

1. Press the <+/-> button. The 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.

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 to1/320s (Auto FP) or 1/250s(Auto FP) in the Nikon camera menu. Press the shutter button halfway. The icon ****displayed on the flash screen means the high speed sync function is enabled on the flash.
2. Turning the camera command dial can set the shutter speed to 1/250s or faster.
3. To check if the FP flash function works properly, look through the shutter speed in the viewfinder. If it shows a speed of 1/250s or faster, the FP flash function is on work.

• If you set a shutter speed as 1/320s (Auto FP) or 1/250s (Auto FP) in the Nikon camera setting, ****will be displayed in the flash screen regardless of practical shutterspeed.
• With high-speed sync, the faster the shutter speed, the shorter the effective flash range.
•  To return to normal flash, set the flash sync speed to other options other than Auto FP. Then the icon ****will disappear when pressing the shutter halfway.
•  Multi flash mode cannot be set in high-speed sync mode.
• Over-temperature protection may be activated after 30 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.

● Set the camera to Rear mode and press the shutter button halfway, then the flash display panel will show the second curtain sync icon .
● When the camera is not set to Rear mode, pressing the shutter button halfway will not light up the icon on the flash display panel.

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. 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 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. 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.

Maximum Stroboscopic Flashes

Wireless Flash Shooting: Radio (2.4G) Transmission

• The TT685IIN attach to the camera is called the transmitter unit, and a TT685IIN that is wirelessly controlled is called the receiver unit.
• You can also wirelessly control the TT685IIN 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.
• You can set up five receiver groups for TTL auto flash shooting. With TTL auto flash, you can easily create various lighting effects.
• Any flash settings for the receiver units(auto flash, manual flash and stroboscopic flash) on the transmitter flash in TTL mode will be automatically sent to the receiver units. So the only thing you need to do is to set the transmitter unit for each receiver group without any operation for the receiver units at all during the shooting.
• This flash can work in i-TTL /M /RPT/ OFF flash modes when set as a transmitter unit.

Positioning and Operation Range (Example of wireless flash shooting)
Autoflash Shooting with One Receiver Unit

• Use the supplied mini stand to position the Receiver unit.
• Before shooting, perform a test flash and test shooting.
• The transmission distance might be shorter depending on the conditions such as positioning of Receiver units, the surrounding environment and whether conditions

Wireless Multiple Flash Shooting
You can divide the Receiver 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 4 groups.

• Auto Shooting with Two Receiver Groups
• Auto Shooting with Three Receiver Groups

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.
   Transmitter Unit Setting
   Press button so that is displayed on the LCD panel.  Transmitter Unit Setting
   Press button so that   or < > is displayed on the LCD panel

2. Setting the Communication Channel
   If there are other wireless flash systems nearby, you can change the channel IDs to prevent signal interference. The channel IDthe Transmitter unit and the Receiver unit(s) must be set to the same

3. Press

   Button to enter C.Fn CH setting.

4. In C.Fn CH, turn the Select Dial to choose channel ID from 1 to 32.

5. Press the Set Button to confirm.

6. 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

   button to enter C.Fn ID. Press the Set Button to choose OFF channel expansion shutdown, and choose any figure from 01 to 99,

7. Scan the Spare Channel
   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.

8. i-TTL ：Fully Automatic Wireless Flash Shooting
   Using Automatic Wireless Flash with a Single Receiver Unit

9. Transmitter Unit Setting

   •  Attach a TT685IIN camera flash on the camera and set it as the Transmitter unit.
   •  M/A/B/C can be set as TTL respectively.

10. Receiver Unit Setting

    • Set wireless controlled TT685IIN as the wireless Receiver Unit.
    • You can choose A/B/C/D/E.

11. Check the communication channel.

    • If the Transmitter unit and Receiver unit(s) are set to a different channel, set them to the same channel.

12. Position the camera and flashes.

    • Position the camera and flashes as the picture shows.

13. Check that the flash is ready.

    • Check that the Transmitter flash ready indicator is lightened.

14. 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 Transmitter unit.

Using Automatic Wireless Flash with Multiple Receiver Units
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.

• 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.
• By making some settings, the auto AF-assist transmitter will not blink after the Receiver unit’s flash ready indicator is lightened.

Using Fully Automatic Wireless Flash
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.

• Flash Exposure Compensation

About the Transmitter Unit
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).

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.

1. Setting the flash mode to .

2. Setting flash output
   Press Function Button 1/2/3/4<M/A/B/C>. Turn the Select Dial to set the flash output of the groups. Press Set Button to confirm.

3. Taking the picture
   Each group fires at the set flash ratio.

Setting Flash Mod
You can directly operate the Receiver unit to manually set the manual flash or stroboscopic flash.

1. Setting the Receiver unit
2. Setting flash mode to .
   • Press button so that is displaye
   • Set the manual flash output.

RPT: Wireless Flash Shooting with Manual Flash

1. Setting stroboscopic flash.
   

   • Press button so that is displayed.
   • Setting the stroboscopic flash.

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（＜0.5m）
   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).

Other Applications

• Sync Triggering
  The Sync Cord Jack is a Φ2.5mm 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.

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.

• 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.

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.
   The catchlight panel will come out at the same time.

3.  Push the wide panel back in.

   • Push in only the wide panel.
   • Follow the same procedures as for bounce flash.

Note

• 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.

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.

In Manual Zoom mode, press the 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

Low Battery Warning
If the battery power is low, will appear and blink on the LCD panel. Please replace the battery immediately

C.Fn: Setting Custom Functions

The following table lists the available and unavailable custom functions of this flash.

C.Fn Cus

Custom Function Signs

| tom Function

Function

| s

Setting No.

| Settings & Description
m/ft| Distance indicator| m| m
ft| feet
AF| AF-assist beam RX| ON| ON
OFF| OFF
STBY| Auto sleep setting| ON| ON
OFF| OFF
RX STBY| Receiver auto power off timer| 60min| 60min
30min| 30min
SCAN| Scan the spare channel| OFF| OFF
START| Start to find the spare

channel

CH| Channel setting| 01~32| Choose channels from 01-32
ID| Wireless ID| OFF| Off
01-99| Choose any figure

from 01-99

BEEP| Beeper| ON| ON
OFF| OFF
LIGHT| Backlighting time| 12sec| Off in 12 sec.
OFF| Always off
ON| Always lighting
LCD| LCD contrast ratio| -3~+ 3| 7 levels
TX DIST| **** Firing distance| 1-100m

0-30m

| 1-100m firing 0-30m firing

1. Press

   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 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.

Protection Function

Over-Temperature Protection

•  To avoid overheating and deteriorating the flash head, do not fire more than 40 continuous flashes in fast succession at 1/1 full power. After 40 continuous flashes, allow a rest time of at least 10 minutes.
• If you fire more than 40 continuous flashes and then fire more flashes in short intervals, the inner over-temperature protection function may be activated. 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

Number ZOOM of  Flashes              (mm)

Power Output Level

| 20| 24| 28| 35| 50| 70| 80| 105| 135| 200
---|---|---|---|---|---|---|---|---|---|---
1/1| 40| 50| 50| 60| 60| 70| 70| 80| 80| 80
1/2| 50| 60| 60| 75| 75| 100| 100| 100| 100| 100
1/4| 100| 100| 100| 100| 120| 150| 150| 150| 150| 150
1/8| 200| 200| 200| 200| 200| 200| 200| 200| 200| 200
1/16| 300| 300| 300| 300| 300| 300| 300| 300| 300| 300
1/32| 500| 500| 500| 500| 500| 500| 500| 500| 500| 500
1/64| 1000| 1000| 1000| 1000| 1000| 1000| 1000| 1000| 1000| 1000
1/128| 2000| 2000| 2000| 2000| 2000| 2000| 2000| 2000| 2000| 2000
1/256| 2000| 2000| 2000| 2000| 2000| 2000| 2000| 2000| 2000| 2000

Number of flashes that will activate over-temperature protection in high- speed sync triggering mode

60

Other Protections
The system provides real-time protection to secure the device and your safety. The following lists prompts for your reference

• 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.

E2| The system gets excessive heat. Please allow a rest time of 10 minutes.
E3|

• The voltage on two outlets of the flash tube is too high.
• Please send this product to a maintenance center.

E9| There are some errors occurred during the upgrading process. Please using the correct firmware upgrade method.

Technical Data

Auto zoom (Flash coverage set automatically to match the lens focal length and image size)
Manual zoom

Swinging/tilting flash head (bounce flash) : 0 to 330° horizontally and -7° to 120° vertically

Flash Duration| 1/300 to 1/20000 seconds
 Exposure Control
Exposure control system| i-TTL autoflash and manual flash
Flash exposure compensation (FEC)| Manual. FEB : ±3 stops in 1/3 stop increments (Manual FEC can be combined.)
Sync mode| High-speed sync (up to 1/8000 seconds), first-curtain sync, and second-curtain sync
Multi flash| Provided (up to 90 times, 100Hz)
 Wireless Flash（2.4G Radio Transmission）
Wireless flash function| Transmitter, Receiver, Off
Transmitter groups| M, A, B, C
Controllable Receiver groups| A, B, C, D, E (E group can be controlled by X series flash trigger)
Transmission range (approx.)| 100m
Transmission range (approx.)| 100m
---|---
Channels| 32 (1~32)
ID| 01~99
Auto Focus Assist Beam
Effective range (approx.)| Center : 0.6~10m
Periphery : 0.6~5m
 Power Supply
Power source| NI-MH battery(recommended) or LR6 alkaline

battery*4

| 0.1-2.6s (Rechargeable Ni-MH Battery)
Full power flashes| About 290 times
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
Working temperature| -10℃-50℃
• Dimensions

W x H x D| 6476190 mm
Weight without battery| 405g
Weight with battery| 489g
2.4G Frequency Range| 2413.0MHz-2465.0MHz
Max. Transmitting Power| 5dbm

Troubleshooting

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.

The power turns off by itself.
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.

• 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 i-TTL 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.

Firmware Upgrade

• 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.

Compatible Camera Models

This flash unit can be used on the following Nikon series camera models

This table only lists the tested camera models, not all Nikon series cameras. For the compatibility of other camera models, a self-test is recommended.
Rights to modify this table are retained.

Maintenance

• 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.

FCC Statement

• 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.
• The device has been evaluated to meet general RF exposure requirement.
• The device can be used in portable exposure condition without restriction.

Warning

• Operating frequency :2412.99MHz-2464.49MHz
• Maximum EIRP Power :4.94dBm

Declaration of Conformity

GODOX Photo Equipment Co.,Ltd. hereby declares that this equipment are in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. In accordance with Article 10(2) and Article 10(10), this product is allowed to be used in all EU member states.For more information of DoC, Please click this web link
https://www.godox.com/DOC/Godox_TT685II_Series_DOC.pdf. The device complies with RF specifications when the device used at 0mm from your body.

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