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Re: How to get those colours outside RGB!

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Re: How to get those colours outside RGB!

Subject: Re: How to get those colours outside RGB!
From: bruce fraser <email@hidden>
Date: Sun, 7 Jul 2002 13:26:07 -0700

At 3:20 PM -0400 7/7/02, email@hidden wrote:

Thanks for the info.
For the use i have in mind, I will be printing colour swatches (not images)
so potentially a number will be outside RGB colour space. I'm using
Photoshop 6 at the moment and when you open a new template you ahve the
opotion ogf RGB, CYMK, Lab file format. presumebaly if select teh L:ab format
i will retain the information on colour outsuide RGB, but as soon as i print
this, data is converted to RGB, and hence truncated? Unless its sent to a RIp
whcih interprets this Lab data? (or am i getting this all wrong!?)
Regards Gary
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Gary,

There are many rgb spaces, and many cmyk spaces. Some RGB spaces even contain "colors" that lie outside Lab (I put "colors" in quotes because they aren't ones that you could capture, display, reproduce, or see as distinct from other, less-saturated colors).

It's usually possible to find an RGB space that will completely encompass the gamut of your output device.

So you're all wrong in that you're thinking of RGB and CMYK as absolutes.

I deal with the issue in painful detail in three columns at www.creativepro.com. Rather than post a very lengthy response here, I'll just refer you to them. Once you've digested that lot, feel free to come back with followup questions.

http://www.creativepro.com/story/feature/6541.html

http://www.creativepro.com/story/feature/7627.html

http://www.creativepro.com/story/feature/8582.html

Bruce
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	>Re: How to get those colours outside RGB! (From: email@hidden)

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