DP3M photos

Well that doesn't sound like you are about to act in good faith, does it?

The purple and  green splotches are a thing of the present. The banding, I agree except at high iso    Ill give sigma the benefit of the doubt these are dp3m pre production samples

I am sorry but I can't agree to that.  Seems to me the issue is being ignored or its not an  Issue to you. However being the case foveon has been pro claimed as a sensor of top  image quality its only natural to hold It to that standard, and point out it is  not all like that when it isn't at least in some rather somewhat common situations.

Well I can only speak for myself on that. You should ask Signa because I am looking at their directly posted example. I believe at this point the issue is rather consistent  and has a bit of a pattern.  Do you think Sigma is  trying to purposely show their camera on a bad light?

--
Raist3d/Ricardo (Photographer, software dev.)- I photograph black cats in coal mines at night...
“The further a society drifts from truth the more it will hate those who speak it.” - George Orwell