Pentax 18-250 - stuck in the "locked" zoomed out position
Hi All!
I have Pentax 18-250 lens - the one designed with (by) Tamron, - the
earlier version of it. Suddenly, I cannot zoom in with it, - it is stuck
in the shortest focal length position.
This lens has a "lock" - to prevent it from extending accidentally (under
its own weight). I wonder if something happened inside this lock, and the
top piece is not engaged with the inner part of the locking mechanism.
Has anybody experienced this?
Has anybody seen a drawing of this lock's design?
Any suggestions on how to get it "unstuck"?
Igor
I had that. Known issue. Pentax EU HQ in Germany fixed mine free of charge.
I know the son of their retired head of service. I can try to ask.
Cheers
Eck
Igor PDML-StR pdmlstr@komkon.org schrieb am Di. 14. Juni 2022 um 17:37:
Hi All!
I have Pentax 18-250 lens - the one designed with (by) Tamron, - the
earlier version of it. Suddenly, I cannot zoom in with it, - it is stuck
in the shortest focal length position.
This lens has a "lock" - to prevent it from extending accidentally (under
its own weight). I wonder if something happened inside this lock, and the
top piece is not engaged with the inner part of the locking mechanism.
Has anybody experienced this?
Has anybody seen a drawing of this lock's design?
Any suggestions on how to get it "unstuck"?
Igor
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Thank you! If it is not a big problem for you to ask about the culprit
(see below), - I'd appreciate.
I've found this "recipe" and tempted to try it:
http://usefulbulk.com/pentaxlens/
I wonder how "universal" the solution (and the culprit) discussed there.
I am also thinking how to deal with the rubber grip (Is it glued? What
would I do if it breaks?)
All suggestions are appreciated.
BTW, my FA 77/1.8 Ltd 's focus also got stuck on the same day.
Outbreak of Lensovid-22? ;-)
Igor
Underpaid N. Overpentaxed Tue, 14 Jun 2022 08:42:27 -0700
I had that. Known issue. Pentax EU HQ in Germany fixed mine free of
charge.
I know the son of their retired head of service. I can try to ask.
Cheers
Eck
Igor PDML-StR pdml...@komkon.org schrieb am Di. 14. Juni 2022 um 17:37:
On Tue, 14 Jun 2022, Igor PDML-StR wrote:
Hi All!
I have Pentax 18-250 lens - the one designed with (by) Tamron, - the earlier
version of it. Suddenly, I cannot zoom in with it, - it is stuck in the
shortest focal length position.
This lens has a "lock" - to prevent it from extending accidentally (under its
own weight). I wonder if something happened inside this lock, and the top
piece is not engaged with the inner part of the locking mechanism.
Has anybody experienced this?
Has anybody seen a drawing of this lock's design?
Any suggestions on how to get it "unstuck"?
Igor
A delayed follow-up:
The rubber grip is not glued, and it was much easier to pull it up and
fold a half of it over the rest than I was expecting.
Tightening the screw fixed the issue completely.
It took 2-3 minutes once I had the lens and the right tools (a bamboo
splint and a very small Phillips screwdriver) at the same location,
and the courage to do it. :-)
Cheers,
Igor
On Tue, 14 Jun 2022, Igor PDML-StR wrote:
Thank you! If it is not a big problem for you to ask about the culprit (see
below), - I'd appreciate.
I've found this "recipe" and tempted to try it:
http://usefulbulk.com/pentaxlens/
I wonder how "universal" the solution (and the culprit) discussed there.
I am also thinking how to deal with the rubber grip (Is it glued? What would
I do if it breaks?)
All suggestions are appreciated.
BTW, my FA 77/1.8 Ltd 's focus also got stuck on the same day.
Outbreak of Lensovid-22? ;-)
Igor
Underpaid N. Overpentaxed Tue, 14 Jun 2022 08:42:27 -0700
I had that. Known issue. Pentax EU HQ in Germany fixed mine free of charge.
I know the son of their retired head of service. I can try to ask.
Cheers
Eck
Igor PDML-StR pdml...@komkon.org schrieb am Di. 14. Juni 2022 um 17:37:
On Tue, 14 Jun 2022, Igor PDML-StR wrote:
Hi All!
I have Pentax 18-250 lens - the one designed with (by) Tamron, - the
earlier version of it. Suddenly, I cannot zoom in with it, - it is stuck in
the shortest focal length position.
This lens has a "lock" - to prevent it from extending accidentally (under
its own weight). I wonder if something happened inside this lock, and the
top piece is not engaged with the inner part of the locking mechanism.Has anybody experienced this?
Has anybody seen a drawing of this lock's design?
Any suggestions on how to get it "unstuck"?Igor
Well done, Igor
"Courage" is certainly the word - I buggered up a couple of old lenses
trying to repair them blind.
Alan C
On 26-Aug-22 11:01 PM, Igor PDML-StR wrote:
A delayed follow-up:
The rubber grip is not glued, and it was much easier to pull it up and
fold a half of it over the rest than I was expecting.
Tightening the screw fixed the issue completely.
It took 2-3 minutes once I had the lens and the right tools (a bamboo
splint and a very small Phillips screwdriver) at the same location,
and the courage to do it. :-)
Cheers,
Igor