Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, Xun Wang <xun911@...> wrote:
>
> 
> 
> ...... Original Message .......
> On Sun, 19 Mar 2006 00:25:34 -0000 "Tom" <ttrostel@...> wrote:
> >Make sure you're comparing apples to apples.  There are a huge number
> >of variables which may affect a shift from blue to purple.
> Given that a user knows what he's doing, there isn't a "huge number of 
> variables....". It simply is the limitation of LAB color space which
makes 
> blue look purple. But many CMMs have already addressed and fixed the 
> problem with their own ways of interpolating the data.
> The problem lies in the CMM's algorithm.
>

Yes, whacky color spokes are definately a problem with LAB color. 
Other problems may include paper/ink combination metamerism,
illumination level, and/or whitepoint.  I'm not saying the user
doesn't know what he is doing certainly.  Its just hard to tell which
factor/factors are in play here.