Using high-speed flash sync mode – Pentax K-X User Manual

Page 166

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164

U

sin

g

th
e F
lash

5

4

Confirm that the external flash is fully charged and then
take a picture.

With the AF540FGZ or AF360FGZ, you can discharge the flash to take a
picture at a shutter speed faster than 1/180 seconds.

1

Remove the cover of the hot shoe and attach the external
flash (AF540FGZ or AF360FGZ) to the camera.

2

Set the mode dial to b or a.

3

Turn on the camera and the external flash.

4

Set the external flash sync mode to HSb (high-speed
flash sync).

5

Confirm that the external flash is fully charged and then
take a picture.

• P-TTL auto is only available with an AF540FGZ, AF360FGZ, AF200FG or

AF160FC flash unit.

• The b will light in the viewfinder when the flash is ready (fully charged).
• For details such as operation method and effective distance, please refer to

the external flash manual.

• The flash does not discharge if the subject is bright enough when the flash

mode is set to C or

i. Therefore, it may not be suitable for daylight-sync

shooting.

• Never press the K/i button when any external flash unit is attached to

the camera. The built-in flash will hit the external flash. If you want to use both
at once, set the wireless mode or connect them using the extension cord.
(p.169).

Using High-Speed Flash Sync Mode

• The b will light in the viewfinder when the flash is ready (fully charged).
• High-speed flash sync is available only when the shutter speed is set faster

than 1/180 sec.

• High-speed flash sync is not available when the shutter speed is set to h.

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