My review of the Sigma dp2 Quattro has begun.
I’m preparing an excellent comparison, but delays due to software issues have exacted a considerable toll on my efforts. But I finally have settled into something that works and produces acceptable color (color space bugs were very confusing, I’ll be documenting how to use SPP without being baffled).
The comparison is coming, perhaps tonight. Update: here it is.
Image from raw X3F file with white balance and tint neutralized near center of ruler. Click for larger image.