Pentax K20D - Manual (Page 146)

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Usi
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h
e
Fl
ash
5
With the AF540FGZ or AF360FGZ, you can discharge the flash to take a
picture at a shutter speed faster than 1/180 second. High-speed flash sync
can be used with the flash attached to the camera, or wireless.
Attaching and Using the AF540FGZ or AF360FGZ on the Camera
1 Remove the cover of the hot shoe and attach the external flash
(AF540FGZ or AF360FGZ).
2 Turn the mode dial and set the exposure mode 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 the picture.
By using two external flashes (AF540FGZ or AF360FGZ) or using the
built-in flash with an external flash, you can shoot in P-TTL flash mode
without connecting the flash units with a cord. High-speed sync mode is
also available for wireless shooting.
• P-TTL auto is only available with the AF540FGZ, AF360FGZ or AF200FG
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 read the
external flash manual.
• The flash does not discharge when the subject is bright enough when Flash
Mode is C or i. Therefore, it may not be suitable for daylight-sync shooting.
• Never press the K 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, see p.149 for the connection method.
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 only available when the shutter speed is faster than
1/180 sec.
• High-speed flash sync is not available when the exposure mode is set to p (Bulb).
Using in Wireless Mode
• Set the power switch of the external flash to [WIRELESS].
• Set the wireless mode of the external flash not directly connected to the
camera to [SLAVE].