Yet another Speedlite 600EX-RT and Speedlite Transmitter ST-E3- RT innovation is the ability to fire recent EOS cameras remotely, using either of these devices as a trigger. Remote control from your flash? Syl explains in this episode.
The EOS Speedlite Transmitter ST-E3- RT allows you to set up multiple Speedlite 600EX-RT flashes as “receivers”, which the ST-E3- RT will control and synchronize as the “sender” unit. The ST-E3-RT is exclusively designed for radio-based wireless flash control and cannot be used for traditional “optical” wireless flash control.
The higher the flash output, the greater the maximum range. Use a hand-held flash meter or trial-and error to determine the correct aperture for a given flash-to subject distance. Once set, the exposure will remain the same as long as the distance and flash power level remain the same.
Option 2 limits the tilting to a straight-upward position of 90°, and no farther. This means that Full-auto Bounce will more often tend to tilt the flash upward but facing slightly toward the subject — a bounce position many experienced photographers are comfortable working with. And, as just mentioned above, this can help avoid possible errors if you are working in larger venues, where walls may be distant and not immediately behind the photographer.
