Datacolor User to User Support Group.

Thanks, Randy

Based on your message, I read the expert (large) target on Epson HW
Matte and then added Extended Grays. Using a loupe, I could still see
higher resolution on the 225 patch target without Extended Grays,
though all looked the same without magnification.  However, checking
with the Windows color applet, I see that the large target with grays
 creates a profile with a slightly larger gamut (Again, not noticeable
to my eyes on the test file).


--- In colorvision_group@yahoogroups.com, "Randy Gentry"
<gentryr001@...> wrote:
>
> For some reason the extended grays do that on some of my profiles with
> specific papers only. What I do is go to the next stage (the large
target on
> 3 pages and then add the extended grays. I actually pick up the
problem in
> the soft proof before I print, I have gone ahead and printed and the
problem
> is in the final print. But, like I said this is only on a few papers and
> most of the time my profiles are better than the ones provided by
the print
> & paper manufacturers. In most cases the expert 225 patch target
seems to
> blend colors better than the large target.
> 
>  
> 
> From: colorvision_group@yahoogroups.com
> [mailto:colorvision_group@yahoogroups.com] On Behalf Of edknight_w
> Sent: Tuesday, October 23, 2007 1:01 PM
> To: colorvision_group@yahoogroups.com
> Subject: [colorvision_group] Extended Grays reducing Print Resolution
> 
>  
> 
> In the past week, I've profiled a few papers with the 225 patch target
> and today started to add Extended Grays to the profiles. Since I'm
> color-challenged, I read all targets twice and use the PFP Readings
> Compare program in the files section to get each pair within a couple
> of Delta-E. After tossing a couple of incompatible papers, I've no
> real complaints, but a question.
> 
> When looking at bars to the left of the MacBeth ColorChecker Chart in
> the color test image, I was surprised that two matte-surface papers
> had better resolution using the profiles built without the use of
> Extended Grays, Epson HW Matte and Epson Watercolor. If I didn't use
> Extended Grays, these two had the best resolution of any non-luster
> papers I've tried, but that advantage is gone if I include EGs in the
> profiles. Confusing.
> 
> Printer: HP B9180 with OEM inks.
> 
> Any thoughts?
> 
> Thanks
> 
> Ed
> 
>  
> 
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