Re: Accuracy of instruments
Re: Accuracy of instruments
- Subject: Re: Accuracy of instruments
- From: Roger Breton <email@hidden>
- Date: Fri, 02 Nov 2007 07:37:54 -0400
Mike,
Terry is right, this business of differences among instruments almost
defeats the conscientious efforts and care that go into color management in
the first place. In my own practice, I always have to be on the lookout for
those places where I get caught between inter-instrument (SpectroEye vs
Spectroscan vs iCcolor vs EyeOne) or, more aptly, inter-manufacturers
differences (SpectroEye vs 530 vs DTP70 vs Techkon). That's not easy to sort
but it's a reality nevertheless.
Terry, I wasn't aware that NetProfiler was only correcting for agreement
with the 'master' instrument of each kind? That is not how I was introduced
to the service by GretagMacbeth at the time.
[ snip ]
> Perhaps this can be approached empirically: Can
> anyone demonstrate a noticeable and objectionable variability in
> printed color that can be traced to the performance of any recent
> model of spectrophotometer that has passed its manufacturer's
> certification process? This is the key: With all of the variables in
> play, some with high degrees of randomness, you need to establish
> that the instrument was a problem before accusing manufacturers of
> indifference to quality.
Roger Breton
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