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Sigma 300mm f4 Tele Macro on ebay Germany - 299 Euro
Posted By: Des, 05-19-2015, 03:26 PM

SIGMA AF 4/300 APO TELE MACRO PENTAX-AF | eBay

This is the shorter (and equally hard-to-find) sibling to the highly-regarded Sigma 400 Tele macro. Pretty close to the IQ of the F/FA*300 f4.5 at half the price:
https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/248358-sigm...ele-macro.html

The AF mechanism can fail on these lenses, but it's a cheap fix to prevent it happening.

Edit: This one has now been sold.

Last edited by Des; 05-21-2015 at 03:59 PM.
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05-19-2015, 10:43 PM   #2
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QuoteOriginally posted by First Poster Quote
The AF mechanism can fail on these lenses, but it's a cheap fix to prevent it happening.
What is the fix?
05-19-2015, 11:27 PM   #3
Des
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Essentially the AF gear mechanism needs to be fixed to the base plate. A link to detailed instructions with photos can be found here: https://www.pentaxforums.com/forums/114-maintenance-repair-articles/182230-fr...ele-macro.html The instructions are in French, but with Google translate you can get them sufficiently comprehensible in English.

In the order of $100 to get it done by a repair shop.

Sigma apparently fixed the problem during the model run (my 400 tele macro was fixed from the factory) so not every copy will be affected.

Last edited by Des; 05-20-2015 at 12:01 AM.
05-19-2015, 11:50 PM   #4
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In the order of 100USD indeed. I had to have mine fixed twice

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