What is "Foveon Blue"?

SandyF wrote:

PicOne wrote:

SandyF wrote:

For PicOne, the SD10 can do the "Foveon Blue" too, for example http://www.pbase.com/sandyfleischman/image/34322272

Coincidentally, one of the other very few pictures I think I used the FOV Blue setting on, was also in SF area:

I had many 'intense' blue skies with the SD10, even in Washington, DC light. Out west, skies could be spectacularly blue... without a polarizer! First, I recall many people complained that those skies weren't 'real' then when the SD14 came out and the skies toned down, people complained that the skies weren't blue enough LOL. The "Foveon Blue" setting is something recent in SPP which may (or may not) emulate that intense blue.

So if I got it right, Foveon Blue was what you used to get when using what was probably called the "standard" setting on the SD9 and SD10?   Did those cameras have a neutral setting?

There are no 'standard' or 'neutral' settings on the SD9 & SD10, ie no colormodes; just pick your white balance. I usually used the SD10 in sunlight/daylight wb, very nice, without tending to yellow up as much as I find the SD14 and even DP2Merrill do in sunlight wb. As a generality, the only color occasionally a bit off could be intense reds, with the SD10 they can end up pink. I have some early pink ishcaboose shots on pbase (archival) in my SD10 gallery.
Another btw, the SD9 and SD10 only produced RAW, which is why we early or relatively early Sigma/Foveon users use RAW primarily and SPP generally. I learned everything about processing through SPP, starting 2004. Others here 2002; I recall the earliest commercial SD9 was available December 2002 I met Dick Merrill using one in October 2002 I have an 8x10 he took of me and printed at the conference. It seemed almost magic to produce and print such a photo in moments. At our conference in November 2001 at San Francisco, Foveon was still showing their prism (not CMOS sensor) based camera. I met Dick Merrill and Carver Mead then.
Best regards, Sandy
http://www.pbase.com/sandyfleischman (archival)
http://www.flickr.com/photos/sandyfleischmann (current)

Also curious, did the old SD9 and SD10 usually throw off the yellows in the same manner the Merrill's emulated Fov Blue mode does?

No, see above.
PS: My SD10 and SD9 work fine. The main reason I seldom shoot with them is their WEIGHT and heavy shutter, which causes me to 'wobble' as I put it, move causing motion blur. The screen is also historically small compared with any later camera.