On Dec 6, 2010, at 4:42 PM, Jack Davis wrote: > Paul, in cleaning the sensor, did you use sensor vibration or a Pentax gum > stick? >
Just the vibration. I only resort to the gum stick if the vibration fails in repeated attempts. These were minor dust specs and not near the center. They disappeared with one vibrate. Paul > Jack > > --- On Mon, 12/6/10, P N Stenquist <[email protected]> wrote: > >> From: P N Stenquist <[email protected]> >> Subject: Re: Latest Pentax Scare: Blobs on K-5 Sensor >> To: "Pentax-Discuss Mail List" <[email protected]> >> Date: Monday, December 6, 2010, 1:31 PM >> >> On Dec 6, 2010, at 4:16 PM, Miserere wrote: >> >>> On 6 December 2010 16:03, paul stenquist <[email protected]> >> wrote: >>>> >>>> On Dec 6, 2010, at 3:33 PM, Charles Robinson >> wrote: >>>> >>>>> On Dec 6, 2010, at 14:19, Miserere wrote: >>>>> >>>>>> Any of you guys with a K-5 experiencing >> any of this? >>>>>> >>>>>> http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=37092371 >>>>>> >>>>>> http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=37101106 >>>>>> >>>>>> Maybe you K-7 owners could take a look >> too. No need to transfer test >>>>>> images to the computer, the blobs can be >> seen on the LCD. >>>>>> >>>>> >>>>> Frankly, if the images turn out OK (besides >> being all green) then there is no problem. Interesting >> as a curiosity, but not in a "OMG the sky is falling" kind >> of way. >>>>> >>>>> Seriously... why would a person even bother >> looking for something like this unless it's affecting the >> output? >>>>> >>>>> And by "affect the output" I mean: can this >> really be SEEN on something other than an f/22 shot of a >> blank grey surface? >>>> >>>> It could be seen on any number of small aperture >> shots. I'm definitely going to test for it. >>>> Paul >>> >>> Thanks for the replies so far, and please keep 'em >> coming. >>> >>> My test unit has a string of blobs near the center >> (most people seem >>> to report them "near the center" for what it's worth). >> They are >>> noticeable at f/8 and smaller when photographing a >> blank surface; I >>> suspect in real photographs (with plenty of detail) >> they should >>> *maybe* be noticeable at f/11 and onwards. I rarely >> photograph at such >>> apertures, but I can imagine people shooting >> landscapes would be >>> annoyed to find these blobs in their blue skies. Then >> again, a blob in >>> a blue sky is easy to clone out. Then again, again, >> we'd all prefer >>> not to have to clone out blobs as part of our >> postprocessing. >>> >>> >> >> I just tested my camera in the same manner as the guy >> reported on dpreview. I filled my computer screen with white >> and shot it with my DA* 16-50 at about 30mm, F stops were >> f22, f16 and f11. Focus set to infinity. No blobs. Saw a few >> specs of dust, Did the sensor clean operation and retested, >> and the dust was gone. I get pure white. >> Paul >> >> >>> —M. >>> >>> \/\/o/\/\ --> http://WorldOfMiserere.com >>> >>> http://EnticingTheLight.com >>> A Quest for Photographic Enlightenment >>> >>> -- >>> 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.
