Re: Color Model

[C. Ecker]

>Joel Biddier wrote:
[...]
> >
> >- CMYK: would be great to have. AFAIK, it requires to change the internal
> >representation of the color, because CMYK contains additional information
> >compared to RGB, i.e. by transforming a color from CMYK to RGB information
> >is lost. Therefore each color in skencil should be represented internaly
> >in CMYK-format instead of RGB as it is now.
> >
[...]
> >Are there any arguments for or against changing the current
> >implementation
> >?
> >
> >
> Funny you should say this, for I was thinking about this just
> yesterday... :-).
>
[...]
> CMYK is a better color model (it is what held back Gimp for years. And
> Skencil, when it comes to high end printing). I would say that we
> should  change the color model (which is easy for me to say; given that
> I am not doing the work at this point ;-) ).
>

I did never make use of CMYK myself and wonder whether this is really
needed. As I understand it the black component is used to correct for
deficiencies of the printer. This would mean that the rgb to cmyk
convertion should be done for the whole document with the same settings
and probably at the stage of printing. Right ?

If we want CMYK what do we need to change then ? Adding a CMYK to the
color selection is trivial, but what else would be needed ? What about
images ?  Color proofs ?

A related question is what the color chooser should look like. I found
that all programs use different variants and I do not have the background
to descide that. Options are e.g. values from 0 to 255 or from 0 to 1 or
in hex, or all of them, mixing of colors, a color wheel as in gtk or
something else ...

Christof




> I feel that this kind of fundamental change will slow things down now,
> but will yield a big pay-off later (it's more advantageous to go this way).
>
> Just my thoughts...
>
> --J
>