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Digital Photography - Monitor calibration (ICM)

 
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Old 10-22-2003, 04:18 PM   #1
Default Monitor calibration (ICM)


Hi!

Just calibrated my monitor with Adobe Gamma and it made some drastic changes
to my current settings. It stored many "things" in a new .icm file, which
made me aware of the fact that I don't have any idea what that is

Is there any way to find out what is stored in such a file, how to read the
data in it (it's not ASCII)... in general, something like "ICM files for
Dummies"?

TIA
Bernd




Bernd
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Old 10-22-2003, 05:41 PM   #2
Bill Hilton
 
Posts: n/a
Default Re: Monitor calibration (ICM)
>From: "Bernd"

>Just calibrated my monitor with Adobe Gamma and it made some drastic changes
>to my current settings. It stored many "things" in a new .icm file, which
>made me aware of the fact that I don't have any idea what that is


The ICM file stores off info about how your monitor "sees" color, which was
measured when you ran Adobe Gamma. Now when you're using a color managed
workflow (like Photoshop) the info in the ICM file lets the monitor display the
colors in the file as accurately as possible, given the monitor limitations.
It's basically a small 9x9 matrix file that translates the RGB triplet values
on the fly for display on the screen.

>Is there any way to find out what is stored in such a file, how to read the
>data in it (it's not ASCII)... in general, something like "ICM files for
>Dummies"?


You can get an ICC profile reader for not much money, this will plot the gamut
of the monitor as defined by the ICM file. If you really want to learn more
then the book "Real World Color Management" by Fraser, Murphy, Bunting does an
excellent job of explaining the entire flow.

Here's a good intro-level web site on CM
http://www.creativepro.com/story/feature/13605.html
http://www.color.org/faqs.pdf (FAQ's from the ICC consortium)

Bill


Bill Hilton
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Old 10-22-2003, 06:44 PM   #3
Bernd
 
Posts: n/a
Default Re: Monitor calibration (ICM)
Bill!

This is why I love usenet Your reply helped a lot. Thanks!

Will work my way through all this material and become more confused or
enlightened... depends

Thanks again!
Bernd

"Bill Hilton" <> wrote in message
news:...
> >From: "Bernd"

>
> >Just calibrated my monitor with Adobe Gamma and it made some drastic

changes
> >to my current settings. It stored many "things" in a new .icm file, which
> >made me aware of the fact that I don't have any idea what that is

>
> The ICM file stores off info about how your monitor "sees" color, which

was
> measured when you ran Adobe Gamma. Now when you're using a color managed
> workflow (like Photoshop) the info in the ICM file lets the monitor

display the
> colors in the file as accurately as possible, given the monitor

limitations.
> It's basically a small 9x9 matrix file that translates the RGB triplet

values
> on the fly for display on the screen.
>
> >Is there any way to find out what is stored in such a file, how to read

the
> >data in it (it's not ASCII)... in general, something like "ICM files for
> >Dummies"?

>
> You can get an ICC profile reader for not much money, this will plot the

gamut
> of the monitor as defined by the ICM file. If you really want to learn

more
> then the book "Real World Color Management" by Fraser, Murphy, Bunting

does an
> excellent job of explaining the entire flow.
>
> Here's a good intro-level web site on CM
> http://www.creativepro.com/story/feature/13605.html
> http://www.color.org/faqs.pdf (FAQ's from the ICC consortium)
>
> Bill





Bernd
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