Re: Spectrolino as a densitometer
Re: Spectrolino as a densitometer
- Subject: Re: Spectrolino as a densitometer
- From: "Alexey Gribunin" <email@hidden>
- Date: Thu, 29 Aug 2002 12:11:41 +0400
Hello!
>
>There is no way of converting Lab into densities. You need
>
>
>
>to take either density readings directly, or spectral
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>
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>readings from which you can derive anything else.
>
>
Spectral data is not required to determine density, or else densitometers
>
would have to be spectrophotometers!
Why not? When the densitometer takes measurement, it takes intensity of
reflected light behind the real color filter. So if you want to get true
density (to emulate densitometer with the spectrophotometer) you have to
take spectral measurement of reflected light and mathematically apply
appropriate filter to it.
Best regards,
Alexey Gribunin, UNIT Copier, Moscow, Russia.
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