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12-19-2009, 10:58 PM   #1
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Cannot mount FA 28-200m on my K20D

Hi Guys,

Got a FA 28-200m lens off ebay. I cannot get it to mount on my K20D. It seems to be blocked by something after it turns a little. The guy who sold it to me mounted it fine on his K100D. The mount on the lens seems fine. Nothing bent or out of place.
Has anyone else had a problem similar to this? What could be blocking the lens?

Any help would be appreciated.

Thanks

12-19-2009, 11:00 PM   #2
Ash
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Any loose screws on the mount side of the lens?
Perhaps go over any screws there with a screwdriver to confirm that they're all flush and tight in their place.
12-19-2009, 11:02 PM   #3
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QuoteOriginally posted by Ash Quote
Any loose screws on the mount side of the lens?
Perhaps go over any screws there with a screwdriver to confirm that they're all flush and tight in their place.
I did that. Everything seems to be nice and tight.
12-19-2009, 11:20 PM   #4
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Have you tried setting the aperture to something else? Not sure if it would apply, but I have an old manual lens that will give me a hard time if the aperture is wide open.

12-19-2009, 11:26 PM   #5
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Check that the aperture actuation lever is not bent.
12-20-2009, 12:06 AM   #6
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Do you have another Pentax to try the 28-200 on?Are you lining the red dots up correctly?
12-20-2009, 10:34 AM   #7
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QuoteOriginally posted by Canada_Rockies Quote
Check that the aperture actuation lever is not bent.
The lever doesn't seem to be bent. There is a plastic tab adjacent to it. Is it possible that it is protruding out more than it should?

QuoteOriginally posted by Barnster Quote
Do you have another Pentax to try the 28-200 on?Are you lining the red dots up correctly?
Unfortunately, I don't. K20D is the only Pentax SLR, any SLR for that matter,
I am aligning the red dots . It goes into the grove alright and turns very little. I will try to post pictures of the lens this afternoon.
01-04-2010, 06:51 AM   #8
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edit: oops wrong thread. delete me.

01-04-2010, 08:02 AM   #9
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QuoteOriginally posted by djseeram Quote
Hi Guys,

Got a FA 28-200m lens off ebay. I cannot get it to mount on my K20D. It seems to be blocked by something after it turns a little. The guy who sold it to me mounted it fine on his K100D. The mount on the lens seems fine. Nothing bent or out of place.
Has anyone else had a problem similar to this? What could be blocking the lens?

Any help would be appreciated.

Thanks
post a photo of the rear of your lens
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