Using An External Flash (Optional) - Pentax K-x Operating Manual

Using an External Flash (Optional)

162
Using the optional external flash AF540FGZ, AF360FGZ, AF200FG or
AF160FC enables a variety of flash modes, such as P-TTL auto flash
mode, depending on the external flash being used. See the chart below for
details.
(z: Available #: Restricted ×: Not available)
Camera Function
Red-eye reduction flash
Auto flash discharge
After the flash is charged, the camera
automatically switches to the flash sync speed.
5
Aperture value is automatically set in e
mode and b mode.
Auto check in the viewfinder
P-TTL auto flash
Slow-speed Sync
Flash exposure compensation
AF assist light of external flash
Trailing Curtain Sync
Contrast-control-sync flash mode
Slave flash
Multiple flash
High-speed flash sync
Wireless flash
*1 Available only when using a DA, DA L, D FA, FA J, FA, F or A lens.
*2 Shutter speed of 1/90 sec. or slower.
*3 When combined with the AF540FGZ or AF360FGZ, 1/3 of the flash discharge can be
output by the built-in flash and 2/3 can be output by the external flash.
*4 Available only when combined with the AF540FGZ or AF360FGZ.
*5 Multiple AF540FGZ or AF360FGZ units, or a combination of an AF540FGZ or AF360FGZ
unit and the built-in flash is required.
Flashes with reversed polarity (the center contact on the hot shoe is minus)
cannot be used due to the risk of damaging the camera or flash.
Flash
*2
Built-in
AF540FGZ
Flash
AF360FGZ
z z
z z
z z
z z
× ×
*1 *1
z
z
z z
z z
×
z
z z
*3
#
z
×
z
× ×
×
z
*4 *5
#
z
AF200FG
AF160FC
z
z
z
z
×
*1
z
z
z
×
×
*4
#
×
×
×
×