Re: Using a MacBeth Color Checker test chart
Re: Using a MacBeth Color Checker test chart
- Subject: Re: Using a MacBeth Color Checker test chart
- From: Terry Wyse <email@hidden>
- Date: Sun, 16 Dec 2001 07:56:26 -0500
on 12/15/01 7:35 AM, Schiller, Susan wrote:
>
We have a Heidelburg Topaz scanner with LinoColor 5.1 software and wish to
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be advised by this group on what is the best procedure to follow when using
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a MacBeth Color Chart that is in the photo to be scanned. Also, if this is
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not the best chart to use, what are your recommendations? Thank you for your
>
advise. S. Schiller
Well, uses of a MacBeth Color Checker included in a folder can go from
simple to extreme.
Simple: Use it as a means of adjusting gray balance (bottom row of patches)
and as a correction aid for "reference" colors such as skin tones, etc.
Extreme?: Use the chart as a means of creating a custom capture profile for
that shot or a group of shots. Keep in mind this will "auto-correct" any
lighting effects the photographer was trying to achieve so be careful using
the chart/profile this way.
Recommendations? Personally I would create a good custom scanner profile for
your Topaz using one of the standard test targets designed for this purpose,
like the Hutcheson Color Target(s) (www.hutchcolor.com).
As far as the photography itself, including a MacBeth Color Checker or
simply a Kodak Gray Scale as a gray balance/reference color aid would be
sufficient I would think. The scanner profile is going to aid in giving you
a good "match" to the original photograph (good or bad) and the Color
Checker/Kodak Gray Scale will just be an extension of that to help you
recognize and correct for deficiencies in the photograph itself such as
color casts or over/under exposure problems.
Hope this helps,
Terry
_____________________________
Terence L. Wyse
Color Management Specialist
All Systems Integration, Inc.
http://www.allsystems.com
email@hidden
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