DA* 16-50 F2.8 enabling screw drive

Started Mar 4, 2014 | Discussions thread
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DA* 16-50 F2.8 enabling screw drive
Mar 4, 2014

Hi guys,

I've just found and paypaled DA* 16-50 F2.8 Pentax zoom lens for 265 euros on  "Leboncoin" french site, I've been looking for one for a long time. At that price,obviously there is a problem and you've guessed it, the HSM motor no longer functions, again a common story is the lens was stored for two years without being used and when brought out again, no AF. The guy assures me that optically it's sound.

I've read several times here threads that say the HSM can be defeated and the AF can be powered by the screw drive but I can't remember the exact steps taken to achieve this, if any of you guys who have experimented with or use the screw drive with the lens could share your experiences I would be more than grateful. I have the K20/K5/K01 and an ever weakening resistance for the K3.

Thanks in advance!

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