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10-10-2010, 05:01 PM   #1
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Sigma EF-500 DG Super flash w/K-x...HELP

I tried to use my Sigma flash with my K-x in High Speed sync but every time I get the flash in the proper mode it switches out of that mode when I press the shutter release to focus. I can't get the flash to stay in the proper mode and I never had this problem with my old K-100. Is this a problem with the K-x not being compatible with my Sigma flash? Help!!

10-10-2010, 05:22 PM   #2
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QuoteOriginally posted by CRMassart Quote
I tried to use my Sigma flash with my K-x in High Speed sync but every time I get the flash in the proper mode it switches out of that mode when I press the shutter release to focus. I can't get the flash to stay in the proper mode and I never had this problem with my old K-100. Is this a problem with the K-x not being compatible with my Sigma flash? Help!!
Sorry I don't have experience with the same combo but you might like to have a browse through here, below, and see if any clues can be picked up (nb: the site suggests on a previous page that the 500 is just like 530 but with less power.)

Sigma EF-530 DG Super - Pentax P-TTL Flash Comparison

.R.
10-11-2010, 04:48 AM   #3
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What shutter speed are you using? If it is slower than 1/180 sec, that could be your problem. The manual states "If the camera’s synchronized speed is slower than the camera’s shutter speed, it switches to ordinary flash."

Tim
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