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05-26-2010, 10:08 PM   #1
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Focus Assist on external Flash 540gz

Hello everybody.
I´ve been searching on forums with no luck, so here´s my question:
I am starting to do some night club shootings... But I noticed that the built in flash of my cameras (k20 and k10) can fire to help on focusing...
Is there a way to use my external flashes (540gz and 360gz) in the same way?
The thing is that the flash when fire the IR beam, not always can focus correctly in complete darkness and motion-subjects,
Thanks in advance.

05-26-2010, 10:19 PM   #2
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AFAIK the answer to this is no. Only the internal flash can be used, or, if you have a K-7, the dedicated assist light. Would be a nice feature, though...

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05-27-2010, 12:14 PM   #3
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QuoteOriginally posted by divarak Quote
But I noticed that the built in flash of my cameras (k20 and k10) can fire to help on focusing...
Is there a way to use my external flashes (540gz and 360gz) in the same way?
Are you asking how to use the external flash (say, AF540FGZ) only as a focus aid? (Pardon my slowness).

The answer is yes. Hit the "mode" button on the flash until you see "SB." When you half press the shutter release button, the AF spotbeam on the AF540FGZ will light up, but the flash won't fire.

For more details, see page 56 of the AF540FGZ manual.

Edited to add: Found it in the AF360FGZ manual too - page 55.

Last edited by SOldBear; 05-27-2010 at 12:19 PM.
05-27-2010, 03:32 PM   #4
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I *Think* he is asking how to use the flash as a Strobe like the K10/20 does for AF assist. In other words, fire the Modeling light of the flash and use it for AF assist. The 540 and 360 will turn on the red AF assist light anytime called for by the camera (I believe) without changing the mode of the flash. Especially in total darkness.

Could be wrong about what is being asked though.



05-27-2010, 05:16 PM   #5
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Press the "modeling" button after you slide the setting switch down to yellow dot and the flash will discharge continouosly for one second. Page 55 from the FGZ360 online manual also cautions to allow the flash a rest after 10 consecutive times.
05-30-2010, 03:32 PM   #6
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Thanks everybody for the answers.... Looks like I have no luck....
Could be interesting change the firmware of the cameras so when someone push some button, the camera fire the model light of the flash so It can focus in complete dark situations.
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