Re: Profile Editing
Re: Profile Editing
- Subject: Re: Profile Editing
- From: email@hidden
- Date: Sun, 21 Jan 2001 17:48:33 EST
In a message dated 1/21/01 3:48:55 PM, email@hidden writes:
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Here are my questions:
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1) Am I placing too much importance on the gamut view? So far the prints
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made from the smaller gamut profile seem to look better.
Yes, Steve Upton will disagree, as he is in the business of selling software
that does this type of comparison, but I find such comparisons less than
reliable. Using Steve's ColorThink tools might be a better choice, but as
Steve and I have discussed previously on this forum there are still other
factors that make the gamut surface less than meaningful.
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2) Are there other factors at work here?
Yes, the gamut surface doesn't tell you where the photographic colors inside
lie, only the vector colors at the surface. Editing profiles can exagerate
the difference even further.
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3) Why would the gamut of my profiles seem to expand significantly by simply
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changing the shape of the CMYK curves? It seems that I should actually
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be
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reducing the number of colors available.
You may be (at least in 8 bits per channel); but you may also be increasing
the supposed gamut limits at the same time. Increasing limits beyond what
your device can actually print is not going to improve your color range
however much it improves the looks of the gamut in a viewing tool, in fact it
may leave lots of colors clipped to the same maximum value, causing loss of
definition.
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4) Finally, I noticed in Profile Editor that when you edit a profile you
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can
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edit the output (rendering) tables and/or the proofing tables. Does this
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mean that if a profile prints correctly but does not display on the monitor
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correctly that you can edit the way it displays without changing the way
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it
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prints?
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Yes, but in the reverse of how you first noted. Editing the output tables
without the proofing tables will change your prints, but not your preview. If
your image looks good on screen, but lousy in print, thats what you need to
do. If your prints are perfect, but preview wrong on screen, you would do the
opposite, and edit the return (proofing) tables only. And always beware of
Heidelberg profiles and workflows, which do not play by the usual rules with
the different intents.
C. David Tobie
Design Cooperative
email@hidden