Pentax K-X Operating Manual page 57

• Using a Combination of the Built-in Flash and an External Flash
Unit
1
2
3
Remove the external flash unit after the channel is set on
the camera, and place it at the desired location.
Set the camera flash to w_ mode, and press the _UP/_
button.
Confirm that both flashes are fully charged and then take
a picture.
• Using a Combination of External Flash Units
1
2
3
Set the wireless mode of the external flash directly
connected to the camera to [MASTER] or [CONTROL].
Sets the carnera to discharge both the flash directly
MASTER
connected to the camera and the wireless flash unit.
Sets the camera to discharge the flash directly connected
CONTROL
to the camera as a control flash only, not as the main flash.
On the wireless remote flash unit, set the wireless flash
mode to [SLAVE] and set the channel to the same channel
as the flash directly connected to the camera. Then, place
it at the desired location.
Confirm that both flashes are fully charged and then take
a picture.
• The Shake Reduction function is automatically turned off in wireless mode.
• When using multiple AF540FGZiAF360FGZ external flashes and performing
high-speed flash sync shooting in wireless mode, set the flash directly
connected to the camera to high-speed flash sync mode.