Re: Working space conversions
Re: Working space conversions
- Subject: Re: Working space conversions
- From: email@hidden
- Date: Wed, 15 Nov 2000 08:53:15 EST
In a message dated 11/15/00 5:59:09 AM, email@hidden writes:
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Please can someone explain the consequences of converting from one colour
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working space to another. I have chosen Colormatch RGB as my default working
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space, I am considering using BruceRGB as the default. If I were to open
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an
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image with an embedded ColormatchRGB profile in Photoshop (v5x) I would
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get
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a profile mismatch warning assuming the system has been changed to BruceRGB.
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If I don't convert the image and subsequently resave the file, the embedded
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profile becomes BruceRGB.
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If I convert Colormatch RGB to BruceRGB presumably the colours will be
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remapped - is this desirable and what will happen if this process is
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repeated (ColormatchRGB > BruceRGB > ColormatchRGB) which is feasible if
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an
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image is being sent from bureau to client back to bureau?
The alternative to remapping colors is getting incorrect colors. Remapping at
least attempts to keep them accurate. Lots of unadjusted numbers that offer
incorrect color are worse than fewer numbers that target the right colors.
Its rather like the watch that loses a minute a day being a better tool than
the one that doesn't run at all, even though mathmatically the stopped watch
offers the correct time far more often...
On a different slant; what is this thing with BruceRGB? Its like an old fad
that won't die. Its not a bad space but it has been largely replaced by
AdoeRGB, which is available in all versions of Photoshop above 5.0, while
Bruce is not a standard space. WIth PS6 you can open files in their current
space, and converting is not necessary unless you really want the file in a
different format. The big loss factor in conversions are the gamma/white
point changes, and unfortunately ColorMatch and either Bruce or AdobeRGB are
on opposite sides of the aisle on both those factors.
C. David Tobie
Design Cooperative
email@hidden