Godox TT685O II Flash for Olympus/Cameras - Manual (Page 6)

Flash Mode: TTL Autoflash
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.
TTL Mode
Press < MODE > Mode Selection Button to enter TTL mode. The
LCD panel will display < TTL >.
● 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.
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● With high-speed sync, the faster the shutter speed, the
shorter the effective flash range.
● Multi flash mode cannot be set in high-speed sync mode.
● Over-temperature protection may be activated after 15
consecutive high-speed sync flashes.
● Try not to use high-speed sync flash, for using this
function will reduce flash tube’s service life.
Note: In the wireless remote control mode, using high-speed
sync flash with Panasonic camera may occur out of sync.
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.
● Setting the flash to High-speed Sync mode when it is on the
camera:
Press the <SYNC> button to turn on high-speed sync flash and
< > is displayed. Then, adjust the camera’s shutter to achieve
high-speed sync flash.
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.
● Setting second-curtain sync:
Second-curtain sync function shall be set on the camera’s menu.
More details please refer to camera’s instruction menu.