When do you want to use the camera light to trigger the trigger?
The distance between the seat and the light position is far off and the light is triggered unreliable
The distance between the seat and the lamp is far away, and the seat needs to be moved, when the TTL departure line is inconvenient or not long enoughThe flash doesn't support high speed synchronization (this depends on the flash device)
Multi lamp lightingMulti lamp lighting and lighting need to switch to a different combination of flash settings in different channel groups, achieve fast switching by changing the combination of the remote channel to the topWhen many people shoot at the same timeThat's all for now
