Re: Use at your own risk: how to disable SDM and enable screw driven AF on DA* lenses

2013-02-07 Thread Boris Liberman
If you have a shoot coming soon and the lens broke while you know for sure that you won't have time to have it fixed... On Thu, Feb 7, 2013 at 7:05 AM, Aahz Maruch wrote: > On Thu, Feb 07, 2013, Boris Liberman wrote: >> >> http://www.pentaxiste.org/pratique/depannage/article/how-to-deactivate-sdm

Re: Use at your own risk: how to disable SDM and enable screw driven AF on DA* lenses

2013-02-07 Thread Bulent Celasun
I may for example! My 50-135mm had a failed SDM (not my fault) and I was unable to use it as an autofocus lens (even though it had the screw driven mechanism intact) because Pentax prevented me doing so. Now its SDM failed again (after repair and this time, my fault). I really want to try the menti

Re: Use at your own risk: how to disable SDM and enable screw driven AF on DA* lenses

2013-02-06 Thread Aahz Maruch
On Thu, Feb 07, 2013, Boris Liberman wrote: > > http://www.pentaxiste.org/pratique/depannage/article/how-to-deactivate-sdm-and-allow?var_mode=calcul > > I would certainly suggest that you use it only as the very last > resort. But as a technical possibility - this is rather interesting. Why woul

Use at your own risk: how to disable SDM and enable screw driven AF on DA* lenses

2013-02-06 Thread Boris Liberman
Hi! Found this link on Russian Pentax forum: http://www.pentaxiste.org/pratique/depannage/article/how-to-deactivate-sdm-and-allow?var_mode=calcul I would certainly suggest that you use it only as the very last resort. But as a technical possibility - this is rather interesting. Standard disc