Re: RGB vs CMYK: some experiments

From: Jim Morris ^lt;[email protected]>
Date: 12/03/04-11:10:04 AM Z
Message-id: <>

This statement is true as the "default" CMYK set-up in Photoshop will
attempt to gray balance the channels based on the spectral qualities of
SWOP inks; but, for those so inclined, you can measure the L*a*b*
coordinates of you gum pigments as they print on paper and replace the
SWOP values with your pigment values in the custom ink set-up.
Theoretically, Photoshop should attempt gray balance based specifically
on your gum pigments (this, of course, assumes that you are trying to
achieve realistic color using CMY pigments).

Jim Morris

On Friday, December 3, 2004, at 03:43 AM, Katharine Thayer wrote:

> , and how the
> default CMYK alters the true CMY values to match a profile that's not
> terribly relevant to gum printing. I'll give it here again just in
> case,
Received on Fri Dec 3 11:11:17 2004

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