Personally, I put it to the particle vs wave nature of light. Sometimes an extra photon or two falls into a sensor's bucket... sometimes none. It's all just the quantum mechanics effects. Regards, Bob S.
On Tue, May 13, 2008 at 10:50 AM, P. J. Alling <[EMAIL PROTECTED]> wrote: > Funny, > > Here's what bugs me about this entire discussion. It's been suspected > that Nikon, Canon, Sony and Olympus all so some kind of pre-processing > to their RAW files. So in other words RAW for them isn't really raw. > It's just possible that all CMOS chips exhibit this kind of behavior, in > fact most implementations of CCD chips may as well, especially if most > manufacturers are applying some sort preprocessing before presenting the > "RAW" data. The fact is only two testing sites observed this, one who's > results are highly suspect as they fly in the face of everyone else's > impressions, and another who IMHO doesn't really know how to do an > unbiased test. Most other testers didn't and even gave the K20D kudos > for it's fine resolution, and high ISO performance. The only people who > should be inconvenienced by this would seem to me to be amateur > astro-photographers, and they should probably be using glass plates > anyway if they care about not getting spurious data. > > Gonz wrote: > > Zombie pixels > > > > On 5/11/08, mike wilson <[EMAIL PROTECTED]> wrote: > > > >> > > >> > From: "William Robb" <[EMAIL PROTECTED]> > >> > >> > >>> The problem that DPReview is having is that they have recieved a couple > >>> of cameras which have > >>> > >> > mobile dead pixels. > >> > >> > >> Interesting. So they are, in fact, not dead. There is some other reason > >> for the misbehaviour. I do wonder what it could be. > >> > >> > >> ----------------------------------------- > >> Email sent from www.virginmedia.com/email > >> Virus-checked using McAfee(R) Software and scanned for spam > >> > >> > >> > >> -- > >> 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. > >> > >> > > > > > > > -- > Vote for Cthulhu. Why settle for a lesser evil... > -- Dr. Jerry Pournelle > > > -- > 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.
