150

When combining two or more external flashes

5

Flash the Using

When using multiple external flashes or 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.

•Do not combine with accessories that have a different number of contacts such as a Hot Shoe Grip as a malfunction may occur.

•Combining with flashes from other manufacturers may cause equipment breakdown. We recommend using PENTAX automatic flashes.

1 Connect the external flash to the camera indirectly. (p.149)

2Set the sync mode for the external flash to the Contrast-Control-Sync mode.

3 Turn the mode dial and set the exposure mode to e, b, c or a.

4Confirm that both the external flash and built-in flash are fully charged and then take the picture.

• When using two or more external flashes and the Contrast-Control-Sync mode is set on the external master flash unit, the flash output ratio is 2 (master unit) : 1 (slave units). When external flash is used in combination with the built-in flash, the flash output ratio is 2 (external flash) : 1 (built-in flash).

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