RE: Colorsync-users Digest, Vol 1, Issue 79
RE: Colorsync-users Digest, Vol 1, Issue 79
- Subject: RE: Colorsync-users Digest, Vol 1, Issue 79
- From: "Marchione, Mike" <email@hidden>
- Date: Tue, 16 Nov 2004 12:07:06 -0800
- Thread-topic: Colorsync-users Digest, Vol 1, Issue 79
> ----------
> From: colorsync-users-bounces+mike.marchione=email@hidden on behalf of email@hidden
> Reply To: email@hidden
> Sent: Tuesday, November 16, 2004 12:04 PM
> To: email@hidden
> Subject: Colorsync-users Digest, Vol 1, Issue 79
>
> Send Colorsync-users mailing list submissions to
> email@hidden
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://lists.apple.com/mailman/listinfo/colorsync-users
> or, via email, send a message with subject or body 'help' to
> email@hidden
>
> You can reach the person managing the list at
> email@hidden
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Colorsync-users digest..."
>
>
> Today's Topics:
>
> 1. Re: Epson Stylus Pro 9600 Extrachrome (Graeme Gill)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 16 Nov 2004 10:51:33 -0800
> From: Graeme Gill <email@hidden>
> Subject: Re: Epson Stylus Pro 9600 Extrachrome
> To: email@hidden
> Message-ID: <email@hidden>
> Content-Type: text/plain; charset=us-ascii; format=flowed
>
> Dennis W. Manasco wrote:
> > Could you provide definitions of "spectral matching failure" and
> > "metamerism failure" which compare and contrast their differences ?
>
> I don't think that "metamerism failure" is anything other than an obscure
> way of saying "tristimulus matching failure". If two spectrum that are
> designed to be metamers are not in fact metamers, then that's just a failure
> of correct tristimulus color matching.
> A "spectral matching failure" would be when two reflectance spectrum that are
> intended or hoped to match, don't match to the desired degree. This
> would show up in their appearance not matching under different illuminants.
>
> Another way of talking about this might be to talk about reflective
> tristimulus matching robustness. Of course the factor that determines
> the robustness is the degree of spectral reflectance matching.
>
> > I have always believed that "metamerism failure" _was_ "spectral
> > matching failure." (Defined in each instance for a given
> > observer/recorder, of course.)
>
> Definitely not. The whole point of a metameric match is that the
> spectrum are different.
>
> > I don't see how the two phrases can be differentiated from one another,
> > since both "explain" illuminate-dependant miss-matches of the reflective
> > stimulus their observer/recorder "records."
>
> I hope the above clarifies.
>
> Graeme Gill.
>
>
>
> ------------------------------
>
> _______________________________________________
> Colorsync-users mailing list
> email@hidden
> http://lists.apple.com/mailman/listinfo/colorsync-users
>
> End of Colorsync-users Digest, Vol 1, Issue 79
> **********************************************
>
>
>
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden