U of S | Mailing List Archive | alt-photo-process-l | Re: separations in CS4

Re: separations in CS4

Charles,

With CS4, you can still split channels with an RGB file.  Just go to the CHANNELS Layers Palette and make it active.  You will see a tiny tiny tiny little icon in the upper right hand corner.  Click on it and one of the options is split channels.  If it is "grayed out", that is probably because you have other layers in the image file.  You will probably have to flatten the image first.

For switching between 0-255 & % ink, for example, using the Curves Palette, open the Curves Window and again, there is a tiny tiny tiny little icon in the upper right hand corner.  Click on it and select CURVES DISPLAY OPTIONS.

Happy Holidays!
On Dec 1, 2009, at 5:40:14 PM, "Tomas Sobota" <tom@sobota.net> wrote:

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From:"Tomas Sobota" <tom@sobota.net>
Subject:Re: separations in CS4
Date:December 1, 2009 5:40:14 PM CST
To:alt-photo-process-l@usask.ca
Charles,
I don't experience any of the problems you seem to have. I can split 8 and 16 bits-per-channel RGB images to R,G and B channels without any need to previously convert to CMYK. I can also switch from 0-255 to percent black in curves.
My working environment is CS4, Win 7, 64 bit AMD dual processor.
Tom Sobota
Madrid, Spain


On Tue, Dec 1, 2009 at 11:57 PM, Charles Ryberg <cryberg@comcast.net> wrote:
I've been away from printing for many months, w orking on an audio project. In the meantime, I upgraded to CS4.  My current problem is that I used to make separation negatives from a RGB file.  Now, as far as I can tell, CS4 makes me convert to CMYK before I can make separations.  Am I doing something wrong?  Did CS4 hide the process as it did with some others (making it impossible to switch between 0 to 255 ink and % ink in the curve dialog for instance).

Any help is appreciated.

ps  I did keep up with the messages while I was graphically inactive.

Yours    Charles   Portland OR