Setting Up a Wireless Flash System

To set the 550EX as a slave unit, refer to page 53 in the 550EX's Instructions booklet.

Set the same channel No. as the

ETTL mZoom 2lfmm

master unit.

 

 

c

 

Set the slave 10 to C.

After setting up the wireless flash system, position slave C as shown in the left diagram.

When indoors, position the slave unit within 5 meters from the master unit. When outdoors, position it within 3 meters. The slave unit should also be within an aD-degree angle in front of the master unit.

Face the slave unit'stransmission sensor toward the master unit.

Indoors, the transmission signals can bounce off the walls so the slave unit's positioning can be a little more flexible.

Do not place any objects between the master unit and slave unit which may obstruct the wireless transmission.

Check that the master unit'spilot lamp is lit and that slave C is flash-ready.

~When the slave unit is flash-ready, its AF-assist light will blink.

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Canon MR-14EXl manual Set the same channel No. as, Master unit, Set the slave 10 to C