Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, MGochnauer <goch@...> wrote:
>
> >> I have also profiled both Ilford Classic Pearl, Classic Smooth 
Pearl
> >> and Colorlife paper for my Canon i9100. I used Perceptual when 
making
> >> the proiles.  Amazingly all the profiles are very consistant, 
but all
> >> are yellowish.  I have to add +5 blue to the profile to make it 
come
> >> out close to the monitors.  It's not a big deal, but I figured 
that
> >> everything would match closer than it is.
> >
> > Canon i9100 printers use dye ink, and are prone to color 
shifting  
> > under differing light sources (illuminant metamerism, for 
short).  
> > You don't mention what kind of light source you are viewing your  
> > prints under, but whatever it is, with this printer, your choice 
of  
> > final color balance and neutrality tweeks will be slightly  
> > different under other types of lighting. The fix, and you note, 
is  
> > quite straightforward, which is good, as the issue can't be  
> > eliminated without removing all illuminant metamerism from all  
> > colorant/media combinations.
> 
> ...and are you sure you made the correction needed for paper with  
> optical brighteners?  I didn't the first time I tried PFP, and the  
> profiled prints were yellowish.
> 
> Myron
>

Ok. So I re-profiled the monitors and they look the same.
Re profiled the Colorlife on the i9100.  Patches are printed and 
profiled at least 12 hours later.  And when I print test pictures I 
know there is significant color shift in the first 30 minutes, so I 
wait.  I printed the target with Qimage and PhotoShop as well as PFP, 
with no icc awarence.  Anyway, all profiles are consistant and 
yellowish so a +8 to +10 blue balances it.  Maybe it is the 
brighteners.  Sort of glad to hear you also were yellowish.  The 
pictures, I mean.  How does one know what paper has brighteners?