A few months after the x300 series was released I started this thread:http://www.luminous-landscape.com/forum/index.php?topic=44889.0
In it, Scott Martin had suggested printing linearization targets and analyzing them with ColorBurst. I downloaded the trial, and gave this a shot but it's never produced the signature curves one sees when you have exceeded your ink limits. I've since come up with my own target (that not only has CMYK, but also RGB on it as well) and have a little spreadsheet that can calculate the chroma from the CGATS files and plot them for me in a graph. Another method one can use is via ColorThink Pro:http://www.youtube.com/watch?feature=player_embedded&v=tXQUPe29YmY
After having done this exercise with a few different papers now, even with the ink level set to high in the media type, I've never seen that characteristic curve that's associated with exceeding the ink levels. For me this begs the question, why bother with ink levels? Why not just set them all to high? Of course if everything looked best with the ink levels set to high then there probably wouldn't be any control over it. Given that those methods aren't giving me anything to go on, I've been looking at the response of the curves in the shadows and also taking into consideration how linear each color is overall for each ink level working under the assumption that better response in the shadows, and better linearity overall will lead to a better print BUT... I still find myself relying on a lot of visual tests as well as I'm not convinced that this really does translate to a better print.
So, now that this machine has been out for a while I wanted to revisit this to see if anyone has come up with any objective methods for determining the optimum ink level settings in the MCT for a given media type?