I'll try a different color space, for sure, but I think the interpolation method is the real culprit. I have the feeling that in a configuration like this: A

I'll try a different color space, for sure, but I think the interpolation method is the real culprit. I have the feeling that in a configuration like this: A-B |/| C-D the position of D could have an impact on how ABC is rendered. But I'll try another color space first, it should be easier to implement.