Datacolor User to User Support Group.

Thanks Tom for all the information.  I'll play around some more this
weekend.  Maybe I'll pull out the old X-Rite 810 and see what it says.
 I really want to use the spectro, however, as it streamlines the process.

Thanks David, I'll try measuring Lab rather than density although QTR
should be able to use either I believe.

Again, I appreciate your help.

Tom Husband
--- In colorvision_group@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 2/7/08 10:49:19 PM, tom.husband@... writes:
> 
> 
> > What are the values the spectro produces?  The numbers I get range
> > from 2.07 down to 0.11.  The linearization values that come with QTR
> > for Silver Rag, for instance, range from 97.38 down to 5.16.  Are we
> > talking apples and apples here or is one Lab and the other density?
> > 
> 
> 97   to 5 would be L*a*b*, 2 to .1 would be visual density (or the
way you 
> did it, relative density). Definately a mismatch. Go back, calibrate
on the 
> white tile, and export Lab values, if thats what the QTR values use...
> 
> C. David Tobie
> International Product Technology Manager
> Digital Imaging & Home Theater
> Datacolor Inc.
> CDTobie@...
> www.datacolor.com/spyder3
> 
> 
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