Bow before the raw power of FOVEON

In message ,
DJ wrote:

The *amount* of
lowpass filtering required may arguable vary between Foveon and Bayer, but the
need is still there.

That would be one of the bigger benefits of full-RGB photosites, if it
were done with a color-precise technology (which the Foveon isn't).
There would be less battle with noise vs sharpening, as sharpening
strength could be a little weaker at sub-pixel radii to get the same end
result.

Of course, by omitting AA filters completely (and microlenses, in the
SD9), the Sigma DSLRs go too far, and end up with nonsense data.
--


John P Sheehy

wrote:

In message ,
DJ wrote:

The *amount* of
lowpass filtering required may arguable vary between Foveon and Bayer, but the
need is still there.

That would be one of the bigger benefits of full-RGB photosites, if it
were done with a color-precise technology (which the Foveon isn't).
There would be less battle with noise vs sharpening, as sharpening
strength could be a little weaker at sub-pixel radii to get the same end
result.

He's referring to the sampling limitations (Nyquist Theorem) inherent with *all*
silicon sensors. The RGB filtering system makes no difference.


--


John P Sheehy

wrote:

In message ,
Tom Phillips wrote:

wrote:

In message ,
DJ wrote:

The *amount* of
lowpass filtering required may arguable vary between Foveon and Bayer, but the
need is still there.

That would be one of the bigger benefits of full-RGB photosites, if it
were done with a color-precise technology (which the Foveon isn't).
There would be less battle with noise vs sharpening, as sharpening
strength could be a little weaker at sub-pixel radii to get the same end
result.

He's referring to the sampling limitations (Nyquist Theorem) inherent with *all*
silicon sensors. The RGB filtering system makes no difference.

It most certainy does.

It doesn't affect *NYQUIST*

The Bayer CFA pattern requires more aggressive
filtering than a stacked-RGB sensor or a monochrome sensor, to avoid
color moire.
--


John P Sheehy

In message ,
Tom Phillips wrote:

wrote:

In message ,
DJ wrote:

The *amount* of
lowpass filtering required may arguable vary between Foveon and Bayer, but the
need is still there.

That would be one of the bigger benefits of full-RGB photosites, if it
were done with a color-precise technology (which the Foveon isn't).
There would be less battle with noise vs sharpening, as sharpening
strength could be a little weaker at sub-pixel radii to get the same end
result.

He's referring to the sampling limitations (Nyquist Theorem) inherent with *all*
silicon sensors. The RGB filtering system makes no difference.

It most certainy does. The Bayer CFA pattern requires more aggressive
filtering than a stacked-RGB sensor or a monochrome sensor, to avoid
color moire.
--


John P Sheehy

wrote in message news:400C013E.28623.92B77A9@localhost...
http://www.foveon.com/X3_tech.html

Please don't feed the troll, aka george preddy aka cameraguy

DM wrote:

wrote in message
news:400C013E.28623.92B77A9@localhost...
http://www.foveon.com/X3_tech.html

Please don't feed the troll, aka george preddy aka cameraguy

More like "the ignorant one."

Fred

--
"...Linux, MS-DOS, and Windows XP (also known as the Good, the Bad, and
the Ugly)."