You guys know a lot more about these things than I do, but I can't help but
thinking that since the *istD is softer than other 6 Mpx cameras, and even
softer than other cameras using the same chip, there must be some
differences around. Do we know fer sure that there's _one_ optimal degree of
softening for a given CCD, and that all the camera makers adhere? Or could
it be that Pentax simply put on a slightly too soft filter?

My gut feeling is that trading data loss in downsampling for data loss with
a softening filter is tit for tat. I'd love to replace that gut feeling with
some real info, though... - In the absence of information, _anything_ is
possible...:-)

Cheers,
Jostein

From: "Herb Chong" <[EMAIL PROTECTED]>
> in the absence of other information, it's not possible.


> From: "Rob Studdert" <[EMAIL PROTECTED]>
> > Their understanding of sampling and aliasing differs from mine. The fact
> > is that no anti-aliasing software can convincingly repair problems
caused by
> > presenting data to the sensor at higher then the Nyquist frequency to
any
> > significant extent without downsampling (filtering) and losing a
> > significant amount of the wanted data.
> >
> > Software simply can't predict whether the data that it sees is detail in
> > the scene or errors caused by aliasing between the sensor pixels and
high
> > frequency image data.


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