I still find the need-to-power-up explanation hard to believe. But I do believe that SDM problems can be intermittent. On Mar 10, 2011, at 4:11 AM, eckinator wrote:
> I remember when I posted that info as received from Pentax German HQ > most of the list were calling PHQ liars and the explanation > impossible... oh well =) > > 2011/3/10 Paul Stenquist <[email protected]>: >> >> On Mar 9, 2011, at 7:36 PM, <[email protected]> wrote: >> >>> Just before I boxed up this lens for shipping to C R I S for repair I >>> thought I'd pop it back onto my K20D just to see if it would auto focus as >>> it had not consistently auto focused for quite some time (bought new in >>> 2/09) - and guess what - it began to auto focus, intermittently at first, >>> and the longer it stayed on the camera body, the less frequently it refused >>> to auto focus. >>> >>> It seems (?) to be auto focusing alright at the moment. >>> >>> I had previously done all the usual - check contacts, switched the lens >>> auto/manual focus switch etc all to no avail. >>> >>> Any ideas out there as to what the heck is going on with this lens? >>> >>> Doesn't make sense to sent it in for repair since it now appears to be >>> functioning ok, but I don't know how it will perform the next time I go to >>> use it. It is probably my least used lens. >>> >>> I remember some discussion here about the lens needing to be on the camera >>> body for awhile for it to auto function properly - something about charging >>> IIRC. >> >> I remember hearing something about SDM lenses needing a few minutes to power >> up. That doesn't seem to be true of any of mine. I do make a point of using >> them all from time to time. My 60-250 and 16-50 both get a lot of use just >> as a matter of need. But I make an effort to mount my least-used 50-135 from >> time to time as well, just to give it a workout. >> Paul >>> >>> Kenneth Waller >>> http://www.pentaxphotogallery.com/kennethwaller >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
