ControlTL™ was launched originally as a solution for wireless radio TTL flash control, but it was designed with much more in mind. The PowerST4 opens the door to studio flash photographers and the amazing benefits of remote power control of the ControlTL system. Nowstudio flash photographers can adjust their lighting directly from the camera position, even with lights from different companies or mixingstudio flash with Speedlites.
The PowerST4 Receiver is designed specifically for Elinchrom RX series lights* and provides remote power control capabilities whenpaired with an on-camera MiniTT1™ Transmitter or FlexTT5™ Transceiver. Power settings on your flash are adjusted simply by using the flash compensation dial on your camera or add the AC3 ZoneController to get three independent zones of power control capability. Once your flash settings are dialed in, ControlTL PowerTracking allows you to change shutter speed, f-stop and ISO and the system will automatically adjust power levels to maintain proper exposure. This elegant little receiver draws power from the flash and doesnʼt need a battery. Using the PocketWizard Utility and USB connection, you can fine-tune the initial power settings, program your modeling light shutoff timing, change channels, or update your firmware.
* (NOTE: Ranger RX, Speed and Speed AS requires EL-Skyport Transceiver RX Adapter)