To use your AC3 ZoneController:
AC3 ZoneController with Remote Speedlites
1. Slide the AC3 onto your on-camera MiniTT1 or FlexTT5. Power on the transmitter,
then the camera.
2. Set up remote Speedlites on FlexTT5 radios normally. Power on the flash, then
the FlexTT5.
a. Set all Speedlites on remote FlexTT5 radios
to normal E-TTL Mode. Do not use
Manual or MASTER / SLAVE on your remote
Speedlites. The AC3 will use E-TTL
commands to control manual power levels
when the AC3 Mode Switch is set to
M (Manual).
b. Use the FlexTT5 Zone Switch to assign
Zone A, B, or C to the Speedlite.
3. On the AC3, set the Mode Switches to M (Manual) or A (Auto) for the zones in use.
Adjust flash output power with the Power Dials:
+ = Black numbers on a white background increase flash output by the stops shown.
– = White numbers on a black background decrease flash output by the stops shown.
4. Take pictures normally.