Re: CororChecker SG CIE reference values (or lack of)
Re: CororChecker SG CIE reference values (or lack of)
- Subject: Re: CororChecker SG CIE reference values (or lack of)
- From: "dpascale" <email@hidden>
- Date: Fri, 18 Dec 2009 11:06:14 -0500
Klauss,
It's a shame that ColorChecker doesn't come with the reference file or at
least a download URL as the target is virtually useless without it.
You can have a very good idea of the ColorChecker values in the various
files I provide freely here:
http://www.babelcolor.com/main_level/ColorChecker.htm#ColorChecker_data
The spreadsheet file there gives you the average and standard deviation from
20 charts.
This average file gives very good results when you do not have the chance to
measure the actual target.
Danny
email@hidden
www.babelcolor.com
----- Original Message -----
From: "Klaus Karcher" <email@hidden>
To: <email@hidden>
Cc: "colorsync-users" <email@hidden>
Sent: Friday, December 18, 2009 10:51 AM
Subject: Re: CororChecker SG CIE reference values (or lack of)
Graeme Gill wrote:
The point is if the ColorChecker SG is merely an accessory for
X-Rites profiling software, rather than being an input device
reference chart, then they should say so. [...]
If you buy one, you can't actually use it for what it is purported to
be intended for, without also buying some other X-Rite product.
INAL, but I think the end user is not legally obligated to *buy*
ProfileMaker or the like to use the reference files -- he can just
download and install PM and use e.g. PM's MeasureTool (in demo mode) to
export at least D50/2° Lab values. Or he can use the spectral reference
file directly with other profiling tools. It's inconvenient, but I guess
it's legal.
But of course one must not *distribute* the reference file without
XRite's permission.
It's a shame that ColorChecker doesn't come with the reference file or at
least a download URL as the target is virtually useless without it.
Klaus
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