Hi,
I use a Sigma DP2M and just bought a DP3M (thanks to the encouragement in this forum!). Obviously the image quality is stunning, yet I can't get my GretagMacbeth card to work with Sigma's software. So in a way I never really know how correct the color is I'm capturing. This became especially evident recently in Iceland when I changed the white balance at some point: Both series of pictures, first blueish, then greenish seem right yet, one must be correct and the other one not.
Any suggestions?