Re: Just Normlicht vs. Graphiclite or GTI
Re: Just Normlicht vs. Graphiclite or GTI
- Subject: Re: Just Normlicht vs. Graphiclite or GTI
- From: "stevej" <email@hidden>
- Date: Thu, 5 May 2005 19:06:08 -0400
Steve,
Thanks for your quick response but please don't put
words in my mouth. I don't remember implying anything
about which one was "correct". In fact my last words were
"go figure". All I was trying to show is why this happens.
Please reread my original message.
Thanks.
Steve Jenkins
----- Original Message -----
From: "Steve Upton" <email@hidden>
To: <email@hidden>
Sent: Thursday, May 05, 2005 06:34 PM
Subject: Re: Just Normlicht vs. Graphiclite or GTI
> At 6:13 PM -0400 5/5/05, stevej wrote:
> >And if you load these four spectra(as read with an i1) into the
> >i1Share app you'll see why all this happens. Load the 2 RHEM
> >colors into "Evaluate:Accuracy" reference and sample circles.
> >Then load the 2 light sources(GTI and JUST) into "Evaluate:Light";
> >sample 1 and sample 2.
> >
> >Since RHEM strips are especially susceptible to red metamerism
> >and the JUST tubes have a sharp drop beyond 650nm, you've
> >got metamerism even though the JUST lights DO have a
> >higher CRI. Go figure...
>
> true but this only shows the difference between the illuminants, not the correctness of one over another.
>
> A better test would be to compare each of them to the D50 illuminant (where the CRI number comes from) and see which one is closer....
>
> Regards,
>
> Steve
>
> ________________________________________________________________________
> o Steve Upton CHROMiX www.chromix.com
> o (hueman) 866.CHROMiX
> o email@hidden 206.985.6837
> o ColorGear ColorThink ColorValet ColorSmarts ProfileCentral
> ________________________________________________________________________
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