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What does a Screwdrive Converted Pentax DA* 50-135mm F2.8 lens sound like?

Started Jun 8, 2014 | Discussions thread
raven900sx Regular Member • Posts: 482
Re: 5 years of heavy use for me in rain and snow - no failure on any of 3 sdm lenses.
1

I did the conversion just to see what it was like.  yes they work screwdrive, sound like screwdriven lenses BUT my 16-50 suddenly had a huge focus issue.  Needed +10 adjustment on camera body.  The 50-135 needed no adjustments...strange.

Changed them back to SDM and focus is spot on with no adjustments needed.  I am wondering if this is why Pentax never has released the option to select SDM or Screwdrive.  Imagine the complaints they would have if your perfectly focusing lens suddenly needed adjustment that wa possibly outside of the in-body adjustment feature

 raven900sx's gear list:raven900sx's gear list
Olympus E-1 Pentax K-7 Olympus PEN E-P2 Pentax Q Olympus PEN E-P3
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