174

When combining two or more external flashes

2 4

3 3

1

2

5

the Using Flash

When using multiple external flashes or using an external flash with the built-in flash, P-TTL is used for flash control.

Contrast-Control-Sync Flash

Combining two or more external flashes (AF540FGZ, AF360FGZ or AF200FG) or using an external flash in combination with the built-in flash allows multiple flash photography (contrast-control-sync flash photography). This is based on the difference between the amounts of light discharged from multiple units.

The AF200FG must be combined with the AF540FGZ or AF360FGZ.

1 Connect the external flash to the camera indirectly.

Refer to p.173 for details.

2 Set the sync mode for the external flash to contrast- control-sync mode.

3 Confirm that both the external flash and built-in flash are fully charged and then take a picture.