I think they lost me at "Foveon-like".
So it will have all the negatives of a high MP camera, like massive files to store, and a slowed FPS, and a faster-clogging buffer, but none of what you actually want from all those MP's, namely higher resolution and more detail to spare when doing things like shooting at high ISO, or cropping heavily.
Am I missing something wonderful about Foveon? If so, then so is everyone else based on the failure of Sigma's Foveon bodies to fly off the shelves. Why not copy FUJI sensors instead? That more complex, non-bayer pixel, no filter thing sounds much more interesting to me, anyway.
I thought with Foveon-like you'd actually have higher effective resolution & detail, because no de-bayering needs to occur. Plus, no anti-aliasing filter generally needed. Granted, based on Wikipedia
, the way in which Sigma resolution (the number of actual pixels) doesn't add up to the same spatial resolution (number of actual pixel buckets), but 3xPixels since they considered each photosite, even those within the same pixel bucket, as being part of the Mega-Pixel count.
That said, based on the Wikipedial
article, a Foveon sensor likely would outperform a slightly higher spatial resolution bayer pattern sensor in general.
If Canon has a improved QE significantly, and individual color response for each photodiode and improved the read-out times, it might make for awesome photos, even if the actual spatial resolution stays at it's current value, or even decreases slightly.