Setting the Slave ID
With the wireless control of multiple slaves, you can set the flash ratio and specify the main flash and fill flash by assigning a slave ID. There are three IDs A, B, and C. The ST-E2 can control slaves A and B. When the flash ratio control lamp is lit, the C slave does not fire. Set the slave ID to A for the slave on the left of the camera, and to B for the slave on the right of the camera. 4k If the slave's ID is set to C, it cannot be controlled by the ST-E2. Be sure to set the slave ID to A...
MultiFlash with Slave ID and Flash Ratio Settings
In the example shown for Multi- Flash with a Uniform Flash Output, the lighting balance flash ratio was adjusted by placing the slaves at different distances to the subject. However, with Multi-Flash with Slave ID and Flash Ratio Settings, the flash ratio can be adjusted without moving the slaves. The flash ratio can be adjusted from 8 1 to 1 and from 1 to 1 8 in half-stop increments.
AFassist beam
Under low-light or low-contrast conditions, the ST-E2's AF-assist beam is emitted to assist autofocusing. The AF-assist beam is compatible with the EOS-3's Area AF. The AF-assist beam's effective range is about 0.6 meter to 10 meters at the center and 0.6 meter to 5 meters along the periphery. The ST-E2's AF-assist beam can be emitted only while the ST-E2 is attached to the EOS-3. In the case of EOS cameras with a built-in AF-assist beam emitter, the beam will be emitted by the camera. The...
Slave settingPower on Channel setting
To prevent wireless signals from being transmitted to unrelated Speedlite 550EX units in the vicinity, you can set a channel different from the one used by the unrelated Speedlite 550EX units. One of four channels can be set. The ST-E2 master and slave Speedlite s must be set to the same channel No. Pre ss the lt CH. gt button and select the desired channel. Each time the button is pressed the channel indicator changes in the following loop l- 2- 3- 4- l The ST-E2 and Speedlite 550EX must be...
Positioning of STE and slave
Attach the slave to the mini stand equipped with tripod socket which comes with the 550EX. Turn the Speedlite's body bounce feature so that the slave sensor faces toward the ST-E2. Indoors, the slave position need not be so precise since the light will also bounce After positioning the camera and slaves, be sure to test the wireless control After positioning the camera and slaves, be sure to test the wireless control Basic Wireless E-TTL Autoflash Operation