Re: Question about input devices and Icc profiles...
Re: Question about input devices and Icc profiles...
- Subject: Re: Question about input devices and Icc profiles...
- From: "Xabier Urien" <email@hidden>
- Date: Wed, 14 Jul 2004 09:52:29 +0200
Hi.....
>
>I was thinking about the Input profiles and this is my conclusion...
>
> With the right profile ALL the input devices has exactly the same gamut!
=
>
> and this gamut could be the cieLab space...
>
No, placing different RGB spaces within Lab, and mapping the device
response apppropriately in Lab does not make them the same, it >makes them
all different... just linked to a universal connection space, thus
"relatable: to one another, except for the issues of colors >outside the
gamut of either one. But since source profiles are a one way street, that is
not really an issue, except for comparing one to >another.
yea... this is the question... the Gamut that any color aplication shows you
of an input device is ONLY tha gamut of the target that you used to do...
no?????
>
>and let me explain please...
>
>All the devices (scaners, digital cameras etc...) capture RGB values =
>
>(normally 8 bit by channel) from 0 to 255 for each color.
>
>And when you make the Icc the Soft is making a relation between the =
>
> "Spectral" colors of the target and RGB answer of the device... this =
>
> means that all the spectral color are "scaneable"...
>
Well, lets say you map a response for the device to a range of colors...
not quite the same, but it effectively maps a "gamut" for the >device...
I agree.... but, then, the Gamut of any Input device only depend of the
target that you used..... and then....
What happen when you tray to scan one color that is "out" of the Icc gamut,
becouse is more saturated than the most saturated of the target that you
used to make the Icc?????
>
C. David Tobie
Thanks for your answer...
Xabier Urien
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