I've had better luck with swabs and fluid than with the Pentax pink-blob-on-a-stick for stubborn spots. If the dust survives that, I guess a trip to Colorado will be necessary.
Rick http://photo.net/photos/RickW --- On Fri, 6/11/10, Bob Sullivan <[email protected]> wrote: > From: Bob Sullivan <[email protected]> > Subject: Re: Dust spots ;-( Give me some help! > To: "Pentax-Discuss Mail List" <[email protected]> > Date: Friday, June 11, 2010, 9:23 AM > Rob, > I've tried the dust detect function and it shows nothing - > a white > screen mock-up of the sensor. > I'm afraid of something beneath the filter assembly and the > trouble of > replacing the camera. > Thanks for the suggestions as to cause. > Regards, Bob S. > > > On Fri, Jun 11, 2010 at 12:26 AM, Rob Studdert <[email protected]> > wrote: > > On 11/06/2010, Bob Sullivan <[email protected]> > wrote: > > > >> I cannot see anything on the sensor's surface. > >> Furthermore, the spot disappears when I open the > lens to f2.8 or f4.0. > >> Spot happens with multiple lenses at f16 or f22. > >> It's a small spot, but I don't understand the > mechanics. > >> Is my sensor broken? > > > > Hi Bob, > > > > What you're describing sounds to me like a classic > case of > > contaminants on the surface of the sensor assembly. > Stopping down will > > make the problem more visible, this is what the dust > detect > > effectively does, have you tried that function yet? > It's often almost > > impossible to see dust specs with the naked eye but if > the problem > > persists then I'd assume it's still there. Hopefully > it's on the top > > surface not sandwiched between the filter assembly in > front of the > > actual sensor, in the later case I'd get the camera > replaced, only a > > thorough clean and testing will tell. > > > > Cheers, > > > > -- > > Rob Studdert (Digital Image Studio) > > Tel: +61-418-166-870 UTC +10 Hours > > Gmail, eBay, Skype, Twitter, Facebook, Picasa: > distudio > > > > -- > > 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.
