Colour management

This continues to give me problems - the four prints here were all done from the same PSD file. The monitor is calibrated, I use both 'standard' printer profiles and ones I have generated myself, but still I cannot get consistency. Photographing my friend Ian Gray's paintings is an additional challenge, as although a print may look fine in isolation, it may look distinctly different from the original painting. The Colorchecker Passport may help, but it did not arrive until late this afternoon, so I haven't yet had a chance to try it.