Re: Going from output space back to working space
Re: Going from output space back to working space
- Subject: Re: Going from output space back to working space
- From: Terry Wyse <email@hidden>
- Date: Wed, 06 Mar 2002 10:03:42 -0500
on 3/6/02 8:16 AM, Scott Kilbourne wrote:
>
Let me propose a slightly modified work flow for us for youse guys to shoot
>
holes in. The photog comes back from the shoot, dumps his images into the
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'puter and assigns his camera profile to them. He already knows that the
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immediate use for these images is to make Fuji prints (for instance), but they
>
may be retasked later for other output (Web page, offset, etc.) Is there a
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downside to having the photog immediately convert the images directly from the
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camera profile to Fuji output space and work on them in that output space?
>
Since we are embedding profiles in all our images, can't we go back to
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AdobeRGB98 or sRGB or SWOP or whatever we need later on? We don't need a
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gamut as large as AdobeRGB98, but the Fuji is larger than ColorMatch. Why not
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just work on the files in their destination space (no need to use Proof in
>
PS)and then send them to AdobeRGB98 for archiving?
Hi Scott, glad to hear you seem to be "fully engaged" in color management!
I've been up in your area a lot in the last couple of weeks and wonder how
you folks have been doing.
The only thing I can think of to "shoot at" is that possibly your FujiRGB
"working space" may be non-linear as far as neutrality (R=G=B is NOT
neutral). A quickie test would be to take a fake gray scale that's either in
AdobeRGB or Lab and convert to FujiRGB and see what sort of numbers you get.
If it turns out to be non-linear, you may be opening yourself up for some
potential editing problems. Just a thought.
As far as the saturated red becoming a dull orange, have you upgraded to
ProfileMaker 4 yet? They have a new "ChromaPlus" gamut mapping option that
helps to push out of gamut colors in the source space near the edges of the
destination space, assuming the source is larger than the destination. In a
quick test I did, it worked for both perceptual and colorimetric intents (I
assumed it would only work for perceptual rendering but I was wrong -
again!). This new gamut mapping option may help in your situation.
Take care,
Terry
_____________________________
Terence L. Wyse
Color Management Specialist
All Systems Integration, Inc.
http://www.allsystems.com
email@hidden
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