Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, David Miller <dm2363@...> wrote:
>
> >I don't know if this is the right place to post by problem, but
here goes:
> >
> >I'm reviewing the PFP Suite during it's 30 day trail and am doing the
> >same with PhotoShop CS 2.
> >
> >Long story short: Calibrated my monitor with Spypro2 and calibrated my
> >Canon i9900 with building a 225 patch to HP Preium Photo Paper.
> >
> >I'm doing a 4x6 print taken from Kodak LS400 (4 magepix digital
> >camera) of myself with my grandson.
> >
> >For some reason I cannot identify why the print comes out with a green
> >color on what should be a Reddiseh/Auburn color (my beard,hair & my
> >grandson hair). My and my grandson's skin tone appears correct.
> >
> >This green doesn't appear in the Photoshop preview window. But the
> >green is being printed out.
> >
> >I'm using the following settings in Photoshop CS2:
> >*The pic original profile is sRGB
> >*Options: Color Handling: "Let Photoshop Determine Colors"
> >*Printer Profile: (profile name I built using PFP)
> >*Rendering Intent: Perceptual
> >*Unchecked "Black Point Compensation"
> >
> >The printer's settings are the same as I used while building a profile.
> >
> >I've tried everything I can think of from converting the pic "Color
> >Management" in Photosho Editing from sRGB to Adobe RGB.
> >
> >Can anyone give me suggestions?
> >
> 
> Rocky,
> 
> It looks to me like you're seeing good results everywhere but in the
> shadows with the profile you built.
> 
> Looking at your measurements: at first glance, they seem fine.
Everything
> seems as it should in the main groups of 5x5 evenly spaced RGB colors
> (the first 5 rows, and the first two groups in the middle row).
> 
> But where I'm seeing some subtle things that might not "fit" with
the rest
> are in the shadow measurements, in the 11 A-E through 15 A-E group.
There
> are some "interesting" shifts in color in some of the patches that a) if
> printed and measured correctly, may be hard to profile with only 225
patches,
> or b) may not be measuring correctly.
> 
> To confirm this, I built a profile, looked at in ColorThink, and I can
> see some "twisting" going on in the shadows, in the tail of the profile
> gamut shape. (Also apparent is that black is pretty far off neutral).
> 
> This isn't the kind of "crunched" or "dented" profile shape that's a
good
> indication of bad things in the measurements (we had an example like
this
> a few weeks ago, where one incorrectly measured row in a 729 patch
target
> caused a big problem), but this is still a sign that something's off.
> 
> Suggestions:
> 
> - I think you're going to want to profile this with 729 patches
rather than
> 225, so first thing to do is print out the 3 page, 729 patch target
and let
> it start drying.
> 
> - In the meantime: go back and try remeasuring the patches in 11 A-E
through
> 15 A-E. I would switch the Target window display from Split to Measured,
> then watch carefully as you remeasure patches, 12B and 13B in
particular.
> Does remeasuring change anything, or do the new measurements look
like the
> old?
> 
> 
> Best regards,
>

Thanks Dave,
I'm letting the 729 patches dry over night, during the mean time I
re-measured the rows as you said, I did not notice any real changes in
the colors.

The pics are still the same, I have a green beard.

I'll meassure the 729 patch tomorrow and let you know.

Thhanks
Rocky