Hello
Now that the discussion has reached this point would you mind commenting on
these points
(1) Is it taken for granted that some editing of the conversion side of the
profile table is necessary to create acceptable separations
(2) Are industry standards like SWOP and ISO profiles artificially corrected
to create desired gray balance, colour saturation and reduce the difference
between perceptual and colormetric rendering intents
(2) While I appreciate that profile software is evolving all the time, but
recently in a direct comparison between GMB and Monaco I have found Monaco
to have better saturation ( or suffering less desaturation particularly in
perceptual intent)
(3) Does any know if it is possible to take the data from an ECI2002
measurement file which was created using Gretag MacBeth Measure Tool
And use it to create a profile with Monaco software
Michael Gardner
Technical Services
PMP Print
Phone 03 9538 8594
Mobile 0423 602 337
Email michael.gardner(a)pmplimited.com.au
From: Chris Murphy <lists(a)colorremedies.com>
Reply-To: eci-en(a)lists.transmedia.de
Date: Fri, 3 Jun 2005 13:00:08 -0600
To: eci-en(a)lists.transmedia.de
Subject: Re: [ECI-EN] ECIRGB versus LstarRGB 2
On Jun 3, 2005, at 11:48 AM, Paul Sherfield wrote:
Hi all
I have just caught up with the RI discussions, very interesting and
Chris's
comments match my own 'Real World' findings!
Having put together a number of colour managed page work flows
processing
1000's of RGB images to CMYK a month, the CM needs to be automated.
After a lot of testing I can confirm that for 95% of RGB images the
relative
colorimetric intent, with BPC, is the most suitable. The remaining 5%
are
not 'spoilt by this intent, just not as good as using perceptual.
Yeah and what this means for developers making products that produce
output device profiles, we really need well behaved colorimetric
intents! It's not good enough to just focus on the in-gamut colors and
maybe some out-of-gamut colors.
To test for this, build a Granger Rainbow (or download it from
colorremedies.com/realworldcolor and click on Downloads), assign an RGB
profile to it and then convert using an output profile you wish to
test. I don't expect RC to do a perfectly smooth job, especially when
using a wide gamut color space as source. But for it to posterize and
have nasty holes in it, not OK. This is not an irregular occurrence and
causes a greater dependence on perceptual rendering than is otherwise
necessary.
Chris Murphy
Color Remedies (TM)
www.colorremedies.com/realworldcolor
---------------------------------------------------------
Co-author "Real World Color Management, 2nd Ed"
Published by PeachPit Press (ISBN 0-321-26722-2)
_______________________________________________
ECI-EN mailing list
ECI-EN(a)lists.transmedia.de
http://lists.transmedia.de/mailman/listinfo/eci-en
**********************************************************************
This email and any attached files are confidential. They are intended solely for the use
of the individual or entity to whom they are addressed. If you have received this email in
error, please notify the sender by return email, and delete the original.
All outgoing emails and attached files are virus scanned, but we do not represent that
this email and any attached files are free from computer viruses or other defects.
Further, we do not accept any liability for any damage caused by this email or
attachments.