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04-17-2010, 10:12 AM   #1
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F 35-135mm Having Some Problems

Hey all,
The Pentax-F 35-135mm f3.5-4.5 I bought last December (from a forum member, but locally off Kijiji) is acting up.
First, I noticed the zoom acting stiff and not wanting to move some times. I just left the lens alone for a bit.
Then, I let it have some time and put it on my camera again, and tried taking pictures. The Zoom started acting fairly normal again, but the focus would not work (AF or MF-- it seemed like it wouldn't go past a certain point).

Any thoughts on how I could get this repaired, and if it's even worth repairing?
Thanks for your time,

04-17-2010, 09:09 PM   #2
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BUMP. Need some help on this.
04-17-2010, 09:30 PM   #3
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From the looks of that database it looks like the average price for a used one is around $80.00. It'll probably cost you more than that to fix.

On the other hand, if you get it fixed you know what you have. There's a chance it'll outlast any used ones you buy.
04-20-2010, 06:41 PM   #4
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Called up Pentax Canada, and they told me that it'd cost $150 to repair (if they even have the parts, which they don't know).


Any other options with this lens, or do I have a nice looking paperweight now?

04-20-2010, 09:59 PM   #5
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The lens probably has several concentric barrels, with grooves in them and nylon bearings in the grooves. That makes it easy to control the complicated motion of multiple groups of lenses. One or more of the bearings may have broken, so the lens doesn't move right any more.

With lots of patience and luck, you might be able to fix it yourself, especially if Pentax Canada does have another nylon bearing. They might have used the same part in a number of zoom lenses. I always figure I don't have much to lose. I have a few paperweights myself. If that doesn't sound fun, post #3 has your answer.

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