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Hi covoxer,
It is becoming clear. What I think you are saying is that when you change from say HSV to CMYK you are doing more than just changing the way the colors are represented. You are at least potentually changing the color itself? I got myself in trouble because I started out using HSV model (it seems the most intuative) and then tried to represent the color as a CMYK value which is only an approximation. What I have been doing is to complete a rendering using HSV colors, Exporting as a Tiff and then using Corel Photo Paint to convert the results to CMYK for printing. All this seemed to work. But.... I just need to change the way I setup my colors initially. The light dawns http://www.talkgraphics.com/images/smilies/smile.gif http://www.talkgraphics.com/images/smilies/smile.gif
J B Lansing
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by J B Lansing:
...when you change from say HSV to CMYK you are doing more than just changing the way the colors are represented. <HR></BLOCKQUOTE>
Yes you've got it right!
Now details.
XaraX stores every color in one of the three models: RGB, HSV or CMYK.
You can see in which model color is in color galery. Open color galery, press 'Options.../Properties...', select 'Display full information'.
Now you see values for every color in galery. They are represented in RGB, HSV, CMYK models.
Clear? Ok.
So how does Xara render those colors on screen and during color separations?
Everything you see on screen is RGB. So if color is stored as RGB you see it without conversion. In case of CMYK, color is converted to RGB then displayed so you see some kind of closest maching color from RGB color space.
When doing color separations CMYK coloros are separated just as they are stored, and RGB are converted to CMYK according to CMS.
As a result, 2 colors represented in 2 different color models may look not the same both on screen and after color separations.
Color picker allways takes screen color which is RGB and separates it to CMYK if color editor mode is CMYK. Color editor does the same when shows you CMYK values for RGB color.
As to HSV, it's adequately equivalent to RGB. It means that color conversions between those two color models are loseless.
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Thanks covoxer,
I can understand your explaination because it is given from the program perspective. I mean you have discribed what XaraX does not just some detatched concepts. This really helped.
J B Lansing