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How important is ettl in firing remote cameras, firing remote strobes, or firing remote cameras and strobes together?
Brainstorming situations where you might install strobes... will the light change that much? Once you commit to a strobe installation, sandbagged on stands, magic armed in the ceiling, or where ever, isn't the most common intent to over power ambient anyway? If one is going through the trouble of bringing their own light, doesn't it automatically follow that one will control that light themselves? How much will ettl contribute to that control, over say, a couple of test exposures?
I can see ettl for use on little hot shoe flashes, that are convenient mini light sources for high mobility, constantly changing circumstances, changing ambient light, changing backlight, people on the move... etc. But if the environment is controllable enough to put up strobes... is ettl that useful?
I'd rather have radio range and reliability over lighting control.
Now, if the ability to change output levels on a pack via radio remote is available, that's a different story. I heard ProFoto has introduced a proprietary link up to their 8a pack... not sure of any details... and Paul C Buff announced some kind of Cyberlink for his line of strobes... not sure if that every materialized)
Trouble is, those are all proprietary systems. Profoto, Dynalite, and 2 other brands strobe packs offer Pocket Wizards built into some of their packs. Sekonic offers light meters with built in PW transmitters as well. So PW has emerged to be the most "universal" radio control system thus far, for triggering.
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