The AC3 ZoneController for Canon or Nikon allows you to be in total control of your flash. Add it to your on-camera MiniTT1 Transmitter or FlexTT5 Transceiver and you instantly have three zones of flash control.
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Whether working in E-TTL ll, CLS/i-TTL or Manual mode, you now have control over all of your flashes directly from the camera’s position.
Canon, Nikon, Pocket Wizard
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