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Re: human color
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Re: human color


  • Subject: Re: human color
  • From: Yvan Sabourin <email@hidden>
  • Date: Tue, 27 Nov 2001 13:13:59 -0500

On 26/11/2001 13:09, "Michael S. Dodds"
<email@hidden> wrote:

> Well in four days now -
> I have had responses of anywhere from
> 2,000 colors to 40,000,000 colors
> distinguishable by the human eye.
>
> I don't mean anything to do with
> printing, reproduction or media -
> just raw human eyesight.
>
> Did they create the LAB space
> to represent the standard human observer?
>
> still wonderin' here boss !
>
> MSD
> _______________________________________________
> colorsync-users mailing list
> email@hidden
> http://www.lists.apple.com/mailman/listinfo/colorsync-users


There is no standard human observer, every human see the color differently.
There is no standard RGB, the color you see depends on your monitor
adjustment.
There is no standard CMYK, the color you see depend on the proof, the press,
or the paper.
Only lab space is independent, and was created as a standard to define color
without any influence, and any industry can use that space to reproduce
color. That space was created only to assign standard coordinates to a
color, and use those to reproduce a certain color.
L is for the lightness axis, A is for the red-green axis, B is for the
yellow_blue axis, and you will know your color is ok when you get the same
numbers once it is reproduced and you reed it with a colorimeter.


Yvan Sabourin


References: 
 >human color (From: "Michael S. Dodds" <email@hidden>)

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