Re: Meter tolerances and is that worth worrying about
Re: Meter tolerances and is that worth worrying about
- Subject: Re: Meter tolerances and is that worth worrying about
- From: Roger Breton <email@hidden>
- Date: Thu, 12 Jun 2003 18:58:12 -0400
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At work we have the Spectralino and I9m starting to use it for simple color
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look ups (cmyk). As a Photographer I was wanting to read the GreytagMacbeth
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color charts and substitute the general reference file with my actual
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readings to help build better camera profiles. I start to wonder about how
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accurate this particular device is, (handled by lots of people). Does it
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need a technician to verify its accuracy every year or is that done
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automatically? They must drift in the manufacturing from one unit to
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another so how critical or anal should a photographer get when it comes to
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camera profiles? After all, the conversion from RGB to CMYK is probably
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more important. BTW, I shoot clothing catalogs where Color Accuracy is
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KING.
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The Separators that I9m joined with have a Epson 7000 (imagination
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ColorMatch rip) that they have not liked. Profiles drift too much. Is
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that an Ink oxidation issue or are they not waiting long enough to allow the
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inks to settle, dry, oxidize before they profile?
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Thanks for these answers and all that I have read in the past.
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--
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David
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email@hidden
Lot's of issues. First, Spectrolino's are top-of-the-line instruments. They
end 'drifting' after years of dependable service if they are cared for. In
your case, a re-certification seems to be in order, Call Gretagmacbeth to
schedule an RMA. Second, Printer profiles don't drift that much over time.
You can reprofile or relinearize to get the sharpest results but at some
point, you're going to have to trust your profiles. Or change profiling
package. The accuracy of a printer can be determined but once you're
satisfied with a profile, it isn't like you're going to get good color
today, bad next week and absolute pits next month! If that's the case, you
have to start questionning the stability of the devices you're printing on.
Regards,
Roger Breton
Laval, Canada
email@hidden
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