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05-26-2013, 05:57 AM   #1
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SMC Pentax F 35-70mm F 3.5- 4.5 Focus Ring Problems (It' s jammed)

Good day,

As the title says I have a lens, the SMC Pentax F 35-70mm F 3.5- 4.5 and it has some problems focusing. At the four meter focus distance it has a jam. It just stops. You have to force it to pass on every other side (lower then 4m or above) . Did anybody else have this problem? What are the solutions? Should I send it to a repair `master` ?

Thank you!

05-26-2013, 09:13 AM   #2
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That's a nice compact zoom ... I have it and use it quite often ... no problems with my copy.

It might be better to buy another one if the repair estimate/bill is too steep ... good luck, J
05-26-2013, 09:19 AM   #3
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It's a 40 / $60 lens. Will almost certainly cost more to repair than to replace. Can you live with the problem?
05-26-2013, 09:31 AM   #4
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I have one too and it's been fine. It might be tougher to get another one in Romania but they do come up here occasionally for $40-60.

05-26-2013, 12:41 PM   #5
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Original Poster
Good day,

Thank you all for the replies. Basically you are telling me to buy another one...
05-26-2013, 01:12 PM   #6
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Try this, it's not as scary as it looks.

https://www.facebook.com/media/set/?set=a.10150093044109265.271429.755984264

I have opened (and put together) few of the Penax-F zooms. The are all similar inside. Both time I needed to fix the zoom movement. Follow the link for detail
06-29-2013, 01:36 AM   #7
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I have a same problem, but mine is stuck at somewhere between 4 and infinity, and does not go less that there. I can just turn the ring to infinity and turn it back there, while auto focusing it just goes to infinity and back there, and stop.

Did you found a solution!? I'm ready to open the lens and look through it, if I know what should I look for and what can I do for it!?

Any advice? (other than buying another one )
06-30-2013, 08:55 AM   #8
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Original Poster
QuoteOriginally posted by mtux Quote
I have a same problem, but mine is stuck at somewhere between 4 and infinity, and does not go less that there. I can just turn the ring to infinity and turn it back there, while auto focusing it just goes to infinity and back there, and stop.

Did you found a solution!? I'm ready to open the lens and look through it, if I know what should I look for and what can I do for it!?

Any advice? (other than buying another one )

Good day,

Personally I didn' t repair it. For me to repair it, would cost another lens (if I can get it again at its right price, that is low) .
Instead I bought a 35mm F2.4- very nice colors but I think mine has backfocus. Will `attack` this problem later.
All in all, if it' s cheaper to repair - repair it if not, buy another one.

All the best!

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