Yahoo Groups archive

Datacolor User to User Support Group.

Index last updated: 2026-04-28 23:18 UTC

Message

Re: Extended Grays reducing Print Resolution

2007-10-25 by jrschwaller

Hi, CD....

On the comment, "...update to Spyder3Print software on our website, 
and you'll get a whole new set of test images to work with..."

If I have printed profiles from PFP 2.1, can I still profile them on 
S3P?

John



--- In colorvision_group@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 10/23/07 7:33:09 PM, edknight@... writes:
> 
> 
> > 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.
> > 
> > 
> 
> More info in profile data is equivalent to less smoothness. If you 
define the 
> exact height of a road every foot along the way with a transit, you 
will get 
> more literal flatness, but you may get less smoothness than if you 
just let 
> the steamroller roll it all out, with reference measurements every 
20 feet. Same 
> with a profile. You are adding a LOT of gray data, so grays will be 
more 
> literal. They will thus be less smooth in some cases. If you prefer 
the smoothness 
> over the literal neutralness, then thats a case where you want to 
use a 
> profile from a target with fewer patches. This is a universal issue 
with ICC 
> profiles, not specific to ours. By the way, update to Spyder3Print 
software on our 
> website, and you'll get a whole new set of test images to work 
with...
> 
> C. David Tobie
> Product Technology Manager
> Digital Color Solutions
> Datacolor
> CDTobie@...
> www.spyder3.com
> 
> 
> ************************************** See what's new at 
http://www.aol.com
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.