I have no question the 3M foveon is better than D30, it is expected no
comparison needed. Thanks for the long explanation, I'm more interested on
the picture comparison, the first dp link do shown the foveon is better, I
have download the "house" picture from imaging-resource, I believe they did
a better test as all target were well controlled and repeatable. I do see
the result from the foveon is very good, to me it is indistinguishable from
the D60 shoot.
The foveon one
http://www.imaging-resource.com/PRODS/SD9/FULLRES/SD9HAWBP1.HTM
The D60 one
http://www.imaging-resource.com/PRODS/D60/FULLRES/D60HMWB.HTM
Before direct comparison the D60 one may need some sharpen as usual.
For the resolution chart look at the comment below you will see most likely
dpreview has wrongly interpreted the resolution on SD9.
http://www.imaging-resource.com/PRODS/SD9/SD9A12.HTM
Anyway the SD9's resolution is better than I have expected (I expect it is
around 4-5MP equ to other DC) it do look similar to D60.
C.H.Ling
----- Original Message -----
From: "Hughes" <hi100@xxxxxxxxxxxxx>
>
> There is still further comparison with D60 on:
> http://www.dpreview.com/reviews/sigmasd9/page20.asp
> and comparisons to other cameras as well:
> http://www.dpreview.com/reviews/sigmasd9/page23.asp
> this comparison using a B/W test chart should favour D60 slightly but is
actually quite favourable
> to Foveon. Possibly because the D60 uses an antialias filter?
> I think some of dpreviews conclusions are not strictly correct but...
> http://www.dpreview.com/reviews/sigmasd9/page24.asp.
>
> A possibly less favourable issue for Foveon is that the color seperation
"filters" are probably
> not as sharp cutoff as other vendors. This leads to greater difficulty in
color seperation and
> could become a dynamic range issue between color channels. For example it
might not be practical
> to use seperate gain an offset for each color channel as is possible with
Bayer sensors. (see
> Nucore website for example of how this is done)
>
> Regards,
> Tim Hughes
> TimHughes@xxxxxxxx
>
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