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Re: filmscanners: which space?
Good point, I had forgot that. And this is in essence why in a given
configuration, the CMYK space is more compressed than RGB.
----- Original Message -----
From: "Maris V. Lidaka, Sr." <email@example.com>
Sent: Sunday, May 27, 2001 11:48 PM
Subject: Re: filmscanners: which space?
> Unfortunately there is one point which you don't mention - CMYK is defined
> as the color space or gamut of *printable* colors. In theory you could
> perhaps have more colors using C, M and Y with the addition of K but
> inks can't print all those colors and in fact can't print all the colors
> can see on the monitor.
> When by definition CMYK is limited to printable colors, its gamut is
> than that of RGB. CMYK is not defined mathematically but is defined using
> device-dependent (i.e. the printing press) methodology.
> ----- Original Message -----
> From: "Karl Schulmeisters" <firstname.lastname@example.org>
> To: <email@example.com>
> Sent: Sunday, May 27, 2001 11:55 PM
> Subject: Re: filmscanners: which space?
> | Consider this
> | CMY are the complimentary colors of RGB. This means that according to
> | theory, you can mix any color in RGB that you would want to with CMY.
> | The difference is that K is gray scale - intensity if you will. So what
> | that means is that if you were to look at a plot of the color spaces
> | the X axis going 'into' the page, for RGB, you would see only one
> | color space. For CMYK you would see a 'sheet' corresponding to each
> | gradation of 'K'. Clearly there is more gamut in CMYK.
> | ----- Original Message -----
> | From: "Karl Schulmeisters" <firstname.lastname@example.org>
> | To: <email@example.com>
> | Sent: Sunday, May 27, 2001 7:32 PM
> | Subject: Re: filmscanners: which space?
> | > I'm not a photoshop expert. I do know a bit about the abstract math
> | behind
> | > the colorimetry. I don't see why you would not be able to do what you
> | > suggest.
> | > ----- Original Message -----
> | > From: "Robert E. Wright" <firstname.lastname@example.org>
> | > To: <email@example.com>
> | > Sent: Sunday, May 27, 2001 6:55 PM
> | > Subject: Re: filmscanners: which space?
> | >
> | >
> | > > > CMYK is not a reduced color space compared to RGB. Printer CMYK
> | > But
> | > > > that is because the color space of the inks is more reduced.
> | > >
> | > > OK. Are you suggesting that some sort of CMYK settings in Photoshop
> | could
> | > > make the CMYK mode's gamut more similar to RGB, and thus reduce the
> | losses
> | > > in RGB to CMYK to RGB conversions? (Asumming you would print to
> | CMYK
> | > > settings.)
> | > >
> | > > Bob Wright
> | > > Oops. That should have been ..."would not print to these CMYK
> | settings..."
> | > >
> | >