Re: UV Filter
Re: UV Filter
- Subject: Re: UV Filter
- From: email@hidden
- Date: Thu, 11 Oct 2001 09:57:29 EDT
In a message dated 10/11/01 8:28:46 AM, email@hidden writes:
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I recently raised the question as to how do I know when to use the UV filter.
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His answer was: "if the b* value in the L*a*b* reading of the paper white
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is less than -5, then the paper is considered flourescent and you need
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to use a UV filter." (Monaco Profiler is good with this as the first patch
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it reads is the paper white.)
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I am trying to improve predictability between a Pictro and an Approval.
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The paper we use for proofing on the Approval had a b* value of -5.11,
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so I got a UV filter. I first recreated only the Approval profile and ran
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a test. Ugly results - really dark images overall. So I assumed I had to
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have both profiles created using the same filter. But when I did, I got
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the exact same results.
Sounds like the white calibration, or some other factor, is not being
corrected for the filter.
C. David Tobie
Design Cooperative
email@hidden