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Pentax K-500 Operating Guide

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By using two external flashes (AF540FGZ or AF360FGZ) or using the 
built-in flash with one or more external flashes, you can shoot in P-TTL 
flash mode without connecting the flash units with a cord. 
First, set the channel for the external flash unit. 
1
Set the channel for the external flash unit. 
2
Remove the cover of the hot shoe, and attach the external 
flash. 
3
Turn on the camera and the external flash, and press 
the shutter release button halfway.
The built-in flash is set to the same channel as the external flash unit.
Using Flash in Wireless Mode
•
Set the external flash to WIRELESS. 
•
Two or more AF540FGZ/AF360FGZ external flashes are required to use 
the high-speed sync flash in wireless mode. This function cannot be used 
in combination with the built-in flash. 
•
Set the wireless mode of the external flash not directly connected to 
the camera to SLAVE. 
Setting the Channel for the External Flash
Be sure to set all the flashes to the same channel. Refer to the manual 
of the AF540FGZ or AF360FGZ for details on how to set the channel 
on the external flash. 
K-500.book  Page 257  Friday, June 14, 2013  2:29 PM