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Article #7561

Re: Color questions

#7561
From: klm
Date: Thu, 18 Jun 1987 01:36
46 lines
3088 bytes
In article <153@mergvax.UUCP> tkxyv@mergvax.UUCP (William Klein) writes:
>
>Forget electronic (screen) proofing: you can't get color anywhere
>close (to a graphics arts person) on the screen to what the ink will look
>like.

I beg your pardon?  Our customers seem to be very pleased with what we've
done.  It took a lot of color science, brain smoke, and patience, but we're
very proud of what we've accomplished.

>You can't even print proofs that look close enough for many customers
>without actually printing the proofs on the same press, using the same ink
>and paper as will be used on final output.

Sure you can.  I think we're the only ones who have figured out HOW, or 
who have bothered to do it, but it can be done.

>Some customers even have a
>'standard' light which will illuminate the proof with a known set of 
>frequencies for the color evaluation. (A printed color photo will look
>quite different under tungsten light, flourescent, 'warm' flourescent,
>and daylight conditions).  With all of these variables, most of what the
>video pre-proofing is used for is cropping, some editing, perhaps some
>drawing (esp in ad layout) and the like. No color adjustment.

The main selling point of our CEPS is that you *can* do color correction
on the screen, and that while on many analog scanners (Hell, Crosfield,
et al.) you have to adjust, proof, adjust, proof, adjust... we put a
little more effort into the color science aspect of it instead of just
the mechanics and we came up with a system that, when properly calibrated,
produces a video proof that is nearly indistinguishable from a hardcopy
proof.  This is assuming of course that both are viewed under proper
lighting conditions.  Plus, we allow the customer the freedom of modifying
the calibration tables to suit his own taste, so HE/SHE can get the results
that look good to HIM/HER.  Unfortunately we still have the big problem
that while color can be described very accurately by science, human color
perception is still a very much subjective thing, and we all know from
experience that sometimes there's just no accounting for a person's taste.

Stay tuned for more.  The fun is just beginning.

-- 
Kevin McBride         |Disclaimer:  These   | harvard -\
Eikonix - A Kodak Co. |  opinions are mine, | ll-xn ---adelie-----> munsell!klm
23 Crosby Dr.         |  not my employer's, | decvax -v  talcott -v  |
Bedford, MA 01730     |  So There!          | allegra ------------encore
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From: klm@munsell.UUCP
Newsgroups: sci.physics,comp.graphics,comp.sys.ibm.pc
Subject: Re: Color questions
Message-ID: <1079@knopfler.munsell.UUCP>
Date: Wed, 17-Jun-87 21:36:24 EDT
Article-I.D.: knopfler.1079
Posted: Wed Jun 17 21:36:24 1987
Date-Received: Sat, 20-Jun-87 00:36:36 EDT
References: <307@msunix.UUCP> <153@mergvax.UUCP>
Reply-To: klm@munsell.UUCP (Kevin McBride)
Organization: Eikonix Corp., Bedford, MA
Lines: 46