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03-21-2008, 05:53 AM   #1
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Pentax Problem with Flash and lens 18-250

I have a Pentax K10D camera along with a Pentax lens 18-250. When in mode AF.S, with the flash opened, and at maximum zoom (250), if I set focus on a close object ( 30-45 centimeters), then point the camera to a more distant point (6 meters) and try to set the focus again, the flash start to blink very quickly, with a strange buzing electrical noise, and the focus does not do anyting. I have to either reduce the zoom or point to another closer object in order to transition the focus before going to the more distant object.
I have the latest firmware 1.30.
Please help!

03-21-2008, 06:00 AM   #2
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Classic feature. Its not a problem, its just that the camera cannot lock the focus, so the flash blinks to improve the light for the af to lock to. Unless the focus point is not on a contrasty bit, it won't lock on and will just repeat the process.

Two options, select another AF point which has more contrast.


Flick the camera to MF, focus in and will work.

Hope this helps
03-21-2008, 02:08 PM   #3
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I have experiencedthe same problem. The electrical buzzing certainly makes you think that unpleasant things are happening to the camera's insides!
03-22-2008, 04:55 AM   #4
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Original Poster
Thank You!

Thank you guys for the quick answers, it's very appreciated. Now at least I know what is causing this and I will be able to work around it next time.
Have a great week-end!


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