Hi Bart,
Well, say I have a grey cloudy sky, and I want to add a contrast curve to bring out the structure. If I do this in C1 using the curves tool, I get structure, but I also get blue clouds... If I do the same thing in Aperture, or Iridient, or indeed Photoshop, I can set the curve to operate on luminosity, not RGB, and the outcome is largely neutral.
I can reduce this shift using other tools, but it gets quite complex. Note, i generally start with a neutral conversion, not film curve, so it's not as if I'm pushing things too far. In any case, I'm not a fan of the high contrast, saturatd look, I'm talking about fairly light adjustments here.
Seems a pretty basic thing... I must be missing something?
David