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09-09-2009, 08:46 AM   #1
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Join Date: Sep 2009
Posts: 3
Problem with 18-250mm Pentax

Hi,

Just purchased brand new 18-250mm Pentax lens. Here is the problem with it.

At the focal length (FL) of 18-70 it works fine. However when I zoom in to 200-250 the lens seem to stop communicating with the camera. It will not focus. It will not set apperture/exposure. If I go back to 18-70mm range it still does not work.

If I cycle the power on the camera it asks me to enter focal length on the display.

The only way to reset the lens is to toggle manual/auto focus switch and manually turn the focus ring while in manual mode. All this with camera turned on. Then I have to cycle the power again.

After this it works at small focal length. However the moment I go to the 200mm it dies again.

Anyone experienced this kind of issue?

I contacted Pentax. They told me that I have to ship the lens for repair at my expense. Is there any way to make them to pay for it?

Thanks

09-09-2009, 09:00 AM   #2
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forensicscientist's Avatar

Join Date: Jun 2008
Location: DFW Texas and Maine - I commute :)
Posts: 889
return it..

You might make sure the contacts on both lens and camera are clean. Other than that, I'd return that bad boy.....
09-09-2009, 09:44 AM   #3
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Join Date: Sep 2009
Posts: 3
Original Poster
After more troubleshooting it appears that the lens is loosing communication with the camera when focus ring is positioned between 7 and 3 marks. Bad lens.
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