Re: Real-world RGB numbers for the ColorChecker SG
Re: Real-world RGB numbers for the ColorChecker SG
- Subject: Re: Real-world RGB numbers for the ColorChecker SG
- From: <email@hidden>
- Date: Fri, 24 Jun 2005 09:14:08 -0400
Dan,
One warning on using i1 Share for RGB: i1 Share 1.4 uses
"Absolute Colorimetric" for its transformed RGB data.
Version 1.3 used "Relative Colorimetric".
Richard will likely expect the RelCol values. It is better
to use the L*a*b* values with i1 Share.
Danny Pascale
dpascale AT BabelColor DOT com
www.BabelColor.com
BabelColor, color translation and analysis
On 23 Jun 2005 21:03:04 -0700,Thu, 23 Jun 2005 20:55:45
-0700
Dan Reid <email@hidden> wrote:
on 6/23/05 10:33 AM, Richard at
email@hidden wrote:
-----Original Message-----
From:
colorsync-users-bounces+richard=email@hidden
[mailto:colorsync-users-bounces+richard=rwc.my-
email@hidden] On Behalf Of Dan Reid
Sent: Thursday, June 23, 2005 4:16 AM
To: Rich Apollo
Cc: colorsync
Subject: Re: Real-world RGB numbers for the ColorChecker
SG
Short answer, measure the dang chart!
What is the procedure for doing that and producing a
file.
If you have a Spectroscan or EyeOne you simply measure
in GretagMacbeth
ProfileMaker MeasureTool and save the measurement data.
If you want RGB numbers for a particular RGB colorspace
you can use the free
Eye One Share with the Eye One to determine the RGB
equivalents for each
spot measurement sample. Teadious. Or use a
GretagMacbeth Spectroscan with
ProfileMaker ColorPicker and select RGB colorspace. Or
you can do this also
in X-Rite ColorShop X using an Eye One and the Profile
Calculator option. Or
........ :)
--
Dan B. Reid
RENAISSANCE PHOTOGRAPHIC IMAGING
Color Management Products & Training for Print,
Internet, & Motion Graphics
http://www.rpimaging.com | Toll Free: (866) RGB-CMYK
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