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● Separately Sold Accessories
The product can be used in combination with the following accessories sold separately, so as to achieve best photography effects: X1T-C wireless flash trigger, Mini softbox, White & Silver reflector, Honeycomb, Color gels, Snoot, etc.
UsePower Switch to power the flash unit on (Long press the button for one second) or off. Turn off if it will not be used for an extended period of time. Setting as a master flash, it will turn the power off automatically after a certain period (approx. 90 seconds) of idle use. Pressing the camera shutter halfway or pressing any flash button will wake up the flash unit. Setting as a slave flash, it will enter sleep mode after a certain period (adjustable, 60 minutes by default) of idle use. Pressing any flash button will wake it up.
C.Fn Disabling Auto Power Off function is recommended when the flash is used off camera. (C.Fn-ST)
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.
Press <MODE> Mode Selection Button to enter TTL mode. The LCD panel will display <TTL>.
Display"HI": When the flash output value is up to the maximum value, "HI"will be displayed and blinking for 3 seconds. Adjust the camera's parameters if underexposure appears.
Display"Lo": When the flash output value is up to the minimum value, "Lo"will be displayed and blinking for 3 seconds. Adjust the camera's parameters if overexposure appears.
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:
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 the <> button:
Press the <SYNC> button to turn on high-speed sync function.
With a slow shutter speed, you can create a light train following the subject. The flash fires right before the shutter closes.
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 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.
In the M mode, high-speed sync and second curtain sync functions can be achieved.
Optical S1 Secondary Unit Setting
In M manual flash mode, press the <SLAVE> 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 the <SLAVE> 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.
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.
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.
Maximum Stroboscopic Flashes:
Flash output\Hz | 1 | 2 | 3 | 4 | 5 | 6-7 | 8-9 | 10-19 | 20-50 | 60-90 |
1/4 | 6 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
1/8 | 14 | 14 | 6 | 4 | 3 | 3 | 3 | 2 | 2 | 2 |
1/16 | 30 | 30 | 30 | 20 | 10 | 8 | 5 | 3 | 3 | 3 |
1/32 | 60 | 60 | 60 | 50 | 50 | 40 | 12 | 5 | 5 | 5 |
1/64 | 90 | 90 | 90 | 80 | 80 | 70 | 60 | 20 | 10 | 10 |
1/128 | 90 | 90 | 90 | 90 | 90 | 90 | 80 | 70 | 30 | 20 |
You can switch between normal flash and wireless flash. For normal flash shooting, be sure to set the wireless setting to OFF.
Master Unit Setting
Slave Unit Setting
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.
Autoflash Shooting with One Slave Unit
The slave unit might be out of order or fire an unwanted flash due to the nearby wifi routers or other 2.4G equipments. If in this case, please adjust the flash's channel or turn off the 2.4G equipments.
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.
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>.
Slave/Master Unit's Positioning and Operation Range
Wireless Multiple Flash Shooting
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 3 groups.
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.
Position | Effective Range |
Center | 0.6~4m |
Periphery | 0.6~2.5m |
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.
With the catchlight panel, you can create a catchlight in the subject's eyes to add life to the facial expression.
The flash coverage can be set automatically or manually. It can be set to match the lens focal length from 24mm to 105mm. Also, with the built-in wide panel, the flash coverage can be expanded for 14mm wide-angle lenses.
In Manual Zoom mode, press the <ZOOM> button.
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 14 mm.
Low Battery Warning
If the battery power is low, <> will appear and blink on the LCD panel. Please replace the battery immediately. When the low battery indicator is displayed, the ZOOM can not be adjusted, it will constantly be 24mm.
The following table lists the available and unavailable custom functions of this flash.
C.Fn Custom Functions | |||
Custom Function Signs | Function | Setting No. | Settings & Description |
ST | Auto sleep (standby) | ON | ON |
OF | OFF | ||
AF | AF-assist beam | ON | ON |
OF | OFF | ||
BL | Backlighting control | 10 sec. | Off in 10 sec. |
OF | Always off | ||
ON | Always lighting |
Number of flashes that will activate over-temperature protection:
Power Output Level | Number of Flashes |
1/1 | 30 |
1/2 +0.7 | 40 |
1/2 +0.3 | 50 |
1/2 | 60 |
1/4(+0.3,+0.7) | 100 |
1/8(+0.3,+0.7) | 200 |
1/16(+0.3,+0.7) | 300 |
1/32(+0.3,+0.7) | 500 |
1/64(+0.3,+0.7) | 1000 |
1/128(+0.3,+0.7) |
Number of flashes that will activate over-temperature protection in high-speed sync triggering mode:
Power Output | Times |
1/1 | 15 |
1/2(+0.3,+0.7); | 20 |
1/4(+0.3,+0.7) | 30 |
1/8(+0.3,+0.7); | |
1/16(+0.3,+0.7) | 40 |
The system provides real-time protection to secure the device and your safety. The following lists prompts for your reference:
Prompts on LCD Panel | Meaning |
E1 | 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. |
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. |
This flash supports firmware upgrade through the USB port. Update information will be released on our official website.
USB connection line is not included in this product. The USB port is a standard Micro USB socket. Common USB connection line is applicable.
Checking the version: Press the <MODE>Button and the turn the flash on. Then, the firmware update version (e.g. Version 1.0 will read U-1.0) will be displayed on the LCD panel.
Model | TT350C |
| |
Compatible Cameras | Please reference to compatible camera models |
Guide No. (1/1 output @ 105mm) | 36 (m ISO 100) |
Flash Coverage | 24 to 105mm |
| |
| |
| |
Flash Duration (t0.1) | 1/350 to 1/20000 seconds |
| |
Exposure control system | 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, 90Hz) |
| |
Wireless flash function | Master, Slave, Off |
Controllable slave groups | 3 (A, B and C) |
Transmission range (approx.) | ≤30m |
Channels | 16 (1~16) |
| |
Effective range (approx.) | Center: 0.6~4m |
Periphery: 0.6~2.5m | |
| |
AA batteries | Ni-MH batteries (recommended) or 2*LR6 alkaline batteries |
Recycle time | Approx. 0.1-2.2 seconds (eneloop Ni-MH batteries of Panasonic). Red LED indicator will light up when the flash is ready. |
Full power flashes | Approx. 210 (2500mA Ni-MH batteries) |
Power saving | Power off automatically after approx. 90 seconds of idle operation. (60 minutes if set as slave) |
| Hotshoe, optic triggering |
| |
W x H x D | 140*62*38 mm |
Weight without battery | 200g |
If there is a problem, refer to this Troubleshooting Guide.
The Camera Flash cannot be charged.
The Camera Flash does not fire.
The power turns off by itself.
Auto zoom does not work.
The flash exposure is underexposed or overexposed.
Photos have dark corners or only parts of the target subject are illuminated.
This flash unit can be used on the following Canon camera models:
5D Mark III | 80D | 7D | 760D | 60D | 600D | 30D | 100D | 1100D | Digital X |
This table only lists the tested camera models, not all Canon series cameras. For the compatibility of other camera models, a self-test is recommended. Rights to modify this table are retained.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be colocated or operating in conjunction with any other antenna or transmitter.
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Godox TT350C - Thinklite TTL Camera Flash for Canon Manual
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