Pentax K-5 Operating Manual page 123

Contrast-ControI-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.
, C0mbining with flashes from other manufacturers may cause equipment
breakdown. We recommend using the AF540FGZ, AF360FGZ or AF200FG.
1
2
3
Connect the external flash to the camera indirectly.
Refer to p.194 for details.
Set the sync mode for the external flash to contrast-
control-sync mode.
Confirm that both the external flash and built-in flash are
fully charged and then take a picture.
° when uSing two or more externai flashes and the C0ntrast C0ntr0i_sYnc m0de
is set onthe external master flash unit, the f!ash output ratio is2 (master unit)
; 1 (s!ave units). Whena n external f!ash is used in c0mbinati0n with the built-
in flashi t he flash output ratio is 2 (externa I f!a sh)- (built-in flash),
, When using multipl e external flashes 0r using an externa! flash with the built-
in flash l P-TTL is used for flash control.