Digital BW, The Print

No matter what your eye tells you, information cannot be created.  Given 
a fairly complex image, the interpolation looks okay, but take it to the 
bench for testing and it will show at that point. Give it a particularly 
difficult image and it will have some artifacts (it is a not only a 
smoothing operation it is non-linear and non-linear operations will 
product artifacts). 

As far as resolution comparision check 
http://www.dpreview.com/reviews/sigmasd9/page23.asp where the reviewer 
pegs the SD9 better than the six meg sensors out there.  Its resolution 
is better according to the table in the above review to the 6's out 
there. I've seen ads for the SD9 that claims an "effective" 10 meg 
resolution. One was in the last B&H catalog I received.

Truman

Paul D. DeRocco wrote:

>
>
> Have you ever actually examined, at the pixel level, the results of the
> Bayer interpolation performed by a camera like a Canon 10D? You can 
> talk all
> the theory you want, but they've developed some stunningly smart 
> algorithms
> for edge detection, etc. There's nothing misleading about calling a 6
> million site sensor with a Bayer pattern a 6 megapixel sensor. The
> algorithms really do work, on real-life images. It would be far more
> misleading for Foveon to say that their 3 megapixel sensor has three times
> the resolution as the number would suggest, and I don't believe they make
> such a claim.
>
> --
>
> Ciao,               Paul D. DeRocco
> Paul                mailto:pderocco@...
>
>