Introduction
This user manual provides comprehensive instructions for the safe and effective operation of your Godox TT685II-O Flash. Designed for Olympus and Panasonic cameras, this speedlight offers advanced features such as TTL auto flash, manual flash, multi-flash, 2.4G wireless X system, HSS (High-Speed Sync) up to 1/8000s, and TCM (TTL Converted to Manual) instant conversion. Please read this manual thoroughly before use to ensure optimal performance and to prevent damage to the product or injury to yourself.
Safety Information
Warning:
- Always keep this product dry. 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 circumstances, these materials may be sensitive to the strong light emitted 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°C. Otherwise the electronic parts may be damaged.
- As this product do not have waterproof function, please take measures of waterproofing in rainy or damp environments.
- Turn off the flash unit immediately in the event of malfunction.
Product Overview
The Godox TT685II-O flash unit is a versatile tool for photographers, offering a range of features for various lighting scenarios. Below is an overview of the main components included with your flash unit.
Figure 1: The Godox TT685II-O Flash unit shown with its included accessories: a mini stand, a protective carrying pouch, and a cleaning cloth. The flash features a large LCD display and intuitive controls for easy operation.
Setup
Battery Installation
- Open the battery compartment cover located on the side of the flash unit.
- Insert four AA batteries (alkaline or Ni-MH recommended) according to the polarity indicators inside the compartment.
- Close the battery compartment cover securely.
Mounting on Camera
The TT685II-O features a quick-release lock for secure and easy mounting onto your camera's hot shoe.
- Ensure the quick-release lock is in the unlocked position.
- Slide the flash unit's hot shoe foot into your camera's hot shoe slot.
- Push the quick-release lock forward until it clicks into place, securing the flash unit firmly to the camera.
- To remove, push the quick-release lock backward to unlock and slide the flash unit off the hot shoe.
Figure 2: Detail of the quick-release lock, designed for fast and secure attachment to a camera's hot shoe. This mechanism ensures stability during use and quick detachment when needed.
Operating Instructions
Basic Operation
- Power On/Off: Press the power button to turn the flash on or off.
- LCD Panel: The LCD panel displays current settings, flash mode, power output, and other relevant information.
- Control Dial: Rotate the control dial to adjust settings such as power output or zoom level. Press the SET button to confirm selections.
Flash Modes
The TT685II-O supports various flash modes to suit different photographic needs:
- TTL Auto Flash Mode: This mode automatically sets the flash output for correct exposure. It supports HSS (High-Speed Sync) up to 1/8000s, FEC (Flash Exposure Compensation), FEB (Flash Exposure Bracketing), and rear-curtain sync.
- Manual Flash Mode (M): Allows you to manually set the flash output from 1/1 (full power) to 1/128 in 1/3 stop increments. This mode offers precise control over lighting.
- Multi Flash Mode (Stroboscopic): Fires a series of rapid flashes to capture multiple images of a moving subject in a single photograph. You can set the number of flashes, frequency, and power output.
Figure 3: Examples of creative photography enabled by the various flash modes, including capturing high-speed action and multiple exposures.
Godox 2.4G Wireless X System
The TT685II-O features a built-in Godox 2.4G wireless X system, allowing it to function as both a master and slave unit. This enables seamless integration with other Godox flashes and triggers for advanced wireless lighting setups.
Figure 4: The Godox 2.4G Wireless X System in action, showing the TT685II-O flash communicating with a wireless trigger for off-camera flash control.
Figure 5: The TT685II-O's role as both a transmitter and receiver within the Godox wireless ecosystem, demonstrating its flexibility for multi-flash setups.
TCM Instant Conversion
The TCM (TTL Converted to Manual) function allows for instant conversion of a TTL flash exposure value into a manual power output. This feature helps to lock in the proper exposure value, ensuring consistent and accurate lighting when switching from automatic to manual control.
Figure 6: The LCD display showing the TCM function, which allows for quick conversion of TTL settings to manual power levels.
Wide Light Coverage (Zoom Function)
The TT685II-O features an auto/manual zoom head with flash coverage adjustable from 20mm to 200mm. This wide range ensures compatibility with various lens focal lengths, providing broad and even light distribution for diverse shooting conditions.
Figure 7: The flash head of the TT685II-O, demonstrating its ability to provide wide and even light coverage across different zoom settings.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the flash unit. For stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth. Do not use strong detergents or solvents.
- Storage: When not in use for extended periods, remove the batteries to prevent leakage. Store the flash unit in a cool, dry place, away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping or subjecting the flash unit to strong impacts, as this can damage internal components.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flash does not fire. | Low or dead batteries; incorrect camera/flash settings; flash not securely mounted. | Replace batteries; check flash mode and camera settings (e.g., sync speed); ensure flash is fully seated and locked on hot shoe. |
| Flash output is too weak/strong. | Incorrect power setting in Manual mode; incorrect FEC in TTL mode; subject too far/close. | Adjust manual power output; adjust FEC; move closer or further from subject. |
| Flash does not sync with camera. | Incorrect sync mode; camera hot shoe connection issue. | Ensure flash is set to appropriate sync mode (e.g., HSS); clean camera hot shoe contacts. |
| Wireless communication failure. | Incorrect channel/group settings; interference; distance too great. | Verify channel and group settings on both flash and trigger; reduce distance; check for obstructions. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Godox (Distributed by EACHSHOT) |
| Model | TT685II-O |
| Compatible Mountings | DSLR (Olympus, Panasonic) |
| Camera Flash Type | Hotshoe |
| Flash Sync Speed | Up to 1/8000s (HSS) |
| Wireless System | Godox 2.4G Wireless X System |
| Flash Modes | TTL, Manual, Multi |
| Zoom Range | 20-200mm (Auto/Manual) |
| Power Output | 1/1 to 1/128 (Manual Mode) |
| Included Components | Godox TT685II Flash Unit |
Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official EACHSHOT or Godox website. You may also contact the retailer from whom you purchased the product for assistance. Please retain your proof of purchase for any warranty claims.
For further inquiries or detailed troubleshooting not covered in this manual, please reach out to customer service.
