For those who claim Sigma's MP counts are way off, it can also be said of Bayer arrays - the technologies are very different, it's difficult to compare them fairly. I've read knowledgeable people here claim Foveon MP count equaling about [raw Foveon pixel count] x [their advertised multiplier of 3] x [real-world adjustment of 2/3], ie. SD1 would equal roughly 15 x 3 x 2/3 = 30MP of Bayer-produced pixels.
You read it on the internets from some random guy based on hearsay, so this is the gospel and the whole truth
I would really like Sigma/Foveon to succeed. We need more competition in the sensor-segment, and new tech is always welcome to push everyone to better achievements. The concept is sound, and am dying to see what DXO and other technical tests say.
Price sounds way too high, but that's what people said about S2 as well and it's killing in its market segment. Unfortunately for Sigma, they don't have the same brand equity as Leica.
I make this post honestly in hopes that someone will chime in with some compelling reasons.
Foveon zealots talk about the tonality, micro-contrast, color discrimination and 3D-quality of pictures produced by the sensors - not unlike the unfalsifiable, ill-defined and/or untested claims many MFDB zealots make.
fredjeang has a Sigma camera, and has given some reserved support for it in the past, with strong caveats on color accuracy in certain situations and colors - maybe he can chime in.