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Godox TT685F - Page 18

Godox TT685F
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Transmission distance is about 100m.
● Use the supplied mini stand to position the slave unit.
● Before shooting, perform a test flash and test shooting.
● The transmission distance might be shorter depending on
the conditions such as positioning of slave units, the
surrounding environment and whether conditions.
You can divide the slave units into two or three groups and perform
TTL autoflash while changing the flash ratio (factor). In addition, you
can set and shoot with a different flash mode for each firing group,
for up to 5 groups.
Wireless Multiple Flash Shooting
A
B
A
B
C
Auto Shooting with Two Slave Groups
Auto Shooting with Three Slave Groups
Positioning and Operation Range (Example of wireless flash
shooting)
Autoflash Shooting with One Slave Unit
Other Applications
Wireless Control Function
The flash unit is built in with a Wireless Control Port so that you can
wirelessly adjust the power level of the flash and the flash triggering.
To control the flash wirelessly, you need a FT-16S remote
control set (on-camera and on-flash). Insert its receive
end into the Wireless Control Port on the flash and
insert the transmit end into the camera hot shoe.
Settings made on the hotshoe-mounted transmit and
receive ends will be wirelessly communicated to the
flash. Then you can press the camera shutter
release button to trigger the flash. You can
also hold the transmit end at
hand to control your off-camera
flash.
For full instructions on the use of FT series remote control, see its user
manual.
Sync Triggering
The Sync Cord Jack is a Φ3.5mm plug. Insert a trigger plug here
and the flash will be fired synchronously with the camera shutter.
Auto Focus Assist Beam
In poorly-lit or low-contrast shooting environments, the built-in auto
focus assist beam will automatically light on to make it easier for
autofocus. The beam will light up only when autofocus is difficult
and get out as soon as the autofocus becomes correct.
If you want to turn off the auto focus assist beam, set the “AF” to
“OFF” on the C.Fn settings.
If you find the auto focus assist beam does not light up, this
is because the camera has got a correct autofocus.
The auto focus assist beam can only start up in the slow
shutter.
Position
Center
Periphery
Effective Range
0.6~10m / 2.0~32.8 feet
0.6~5m / 2.0~16.4 feet
- 41 - - 42 -
The Reason & Solution of Not Triggering in Godox 2.4G Wireless
1. Disturbed by the 2.4G signal in outer environment (e.g. wireless base
station, 2.4G wifi router, Bluetooth, etc.)
  To adjust the channel CH setting on the flash trigger (add 10+ channels) and
use the channel which is not disturbed. Or turn off the other 2.4G equipment in
working.
2. Please make sure that whether the flash has finished its recycle or caught
up with the continuous shooting speed or not(the flash ready indicator is
lighten) and the flash is not under the state of over-heat protection or
other abnormal situation.
Please downgrade the flash power output. If the flash is in TTL mode, please
try to change it to M mode(a preflash is needed in TTL mode).
3. Whether the distance between the flash trigger and the flash is too close
or not
Please turn on the “close distance wireless mode” on the flash trigger (0.5m):
X1 series: press the test button and hold on, then turning it on until the flash
ready indicator blinks for 2 times.
XPro series: Set the C.Fn-DIST to 0-30m.
4. Whether the flash trigger and the receiver end equipment are in the low
battery states or not
  Please replace the battery(the flash trigger is recommended to use 1.5V
disposable alkaline battery).

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