Capture One camera profiles

I've been playing around with the QPcard, an Agfa IT-8 target and trying to get some sense from the Pentax *ist-D...

There are some seriously good quality profiles by Magne Nilsen which are available from: RawWorkflow.com. However, it's only for Canons, and a couple of Nikons. The *ist-D just isn't commercially viable :(

On a similar note I've found that the *ist-D (f/w 1.12) doesn't seem to capture manual white balance correctly. I used the Expodisc to set the WB and also capture a grey frame. In Capture One the camera reported 12400/30 (color temp & tint). Measuring off the Expodisc frame yielded 6900/20, and measuring off the QPcard 201 yielded 6600/21. Quite why the *ist-D gives such a strange WB I don't know... but it occurs in Capture One, Adobe Camera Raw (CS2), and Raw Shooter. So I have to assume it is either the camera or the (mis-)interpretation of the data.

And it's definitely not a linear relationship between the correct and manual WB either. Added to that is that manually set WB and JPG in the *ist-D is still just plain wrong. Something's goofed up somewhere, and I'm wondering if it's in the Pentax firmware.

So, I'm not sure whether I should try and profile the *ist-D with the camera WB, or an accurately set WB in Capture One. Am trying to find out some answers...

..tried this again and found the MWB agrees with the Expodisc... could it be that I'm using the Expodisc wrongly, or is there something about the way the *ist-D captures the MWB? (I'm trying to find out!)