WIRELESS TLL SLAVE OPERATION
The ProMaster FL1 is equipped with advanced wireless TTL flash feature, so that it can be used off camera while still maintaining full TTL control. Take a moment to familiarize yourself with the following terms in order to understand how to work with multiple wireless TTL flash units:
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| Master | This can be the camera’s |
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| wireless controller. Only one master flash is allowed in a wireless multiple flash photogra- |
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| phy setting. It controls how the slave flashes operate in wireless TTL mode. |
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| Remote or | Flash units that are not directly connected to the camera, and are controlled by a master |
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| Slave Flash | flash or controller are called “slave” or “remote” units. There is no limitation on the number |
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| of remote units that can be used at one time. |
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| Channel | Master and Slave units exchange data through channels. Four channels (1, 2, 3, 4) are |
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| available in the flash. You can pick the channel you prefer for communication between the |
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| master and remote flash units. You can use this option to prevent your remote flash units |
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| from being triggered by the master unit of another photographer working with the system |
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| nearby. |
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| Group | You can assign remote flash units to one of the three groups (A, B, or C) and set the |
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| mode and output power level of each group. |
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| Wireless TTL Slave Operation 23 |
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