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Godox TT685N - Page 11

Godox TT685N
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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, etc.
* 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 1/3rd stops.
It is useful in situations where minor adjusting of the TTL system is
needed based on the environment.
Setting FEC:
Set the flash exposure
2 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”.
Press < SET > button again
3 to confirm the setting.
Press Function Button 2
1 < >. The icon < >
and flash exposure
compensation amount will be
highlighted on the LCD
panel.
- 35 - - 36 -
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 shutter
speed.
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 15
consecutive high-speed sync flashes.
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.
Select the high-speed sync icon < >.
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.
Set the flash sync speed to
1/320s (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.
Turning the camera command
dial can set the shutter speed to
1/250s or faster.
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.

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