Re: evaluating identical media in incorrect lighting conditions
Re: evaluating identical media in incorrect lighting conditions
- Subject: Re: evaluating identical media in incorrect lighting conditions
- From: "Steve" <email@hidden (nospam)>
- Date: Tue, 27 Jan 2004 17:02:27 -0500
----- Original Message -----
From: "John MacDonald" <email@hidden>
To: "Roger Breton" <email@hidden>; <email@hidden>
Sent: Tuesday, January 27, 2004 03:09 PM
Subject: Re: evaluating identical media in incorrect lighting conditions
>
It's that "may not be off in the same way" thing I'm talking about.
>
Here's the example that got me asking:
>
>
We printed some files on a Lightjet last week. We made new prints from
>
the same files this week. Some of these new prints were 200 percent
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enlargements, some had slight color corrections made to them, and some
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were unchanged from the first.
>
>
When I viewed them in unbalanced light, the new ones all looked
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significantly redder, far enough that it would be unacceptable to the
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client. When I viewed them in balanced light, the new ones only looked
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slightly redder and were acceptable. So while the new ones did not
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exactly match under either light, they were acceptable under a balanced
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light source and unacceptable under an unbalanced light source.
>
>
I am hoping someone can confirm that this is possible and not just my
>
imagination.
>
>
Thanks!
>
John
>
Any imaging system is susceptible to metamerism when the spectral
peaks of the dyes and light source don't line up the same. That's
why there are reference light sources.
HTH
email@hidden
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