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cmyk and PhotoShop Elements 2.0?


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CMYK is the basis of all low-to-middling quality commercial full-colour printing, and there comes a point when the device has to be told how much of each ink to lay down. In an ink-jet photo printer, which typically nowadays has six to eight inks, that's all handled by the driver, but in ordinary printing quite a lot of work is usually done at an earlier stage in the workflow - trapping, for example, which is a kludge to compensate for inaccurate alignment of the different colours - and that is done on the CMYK separations used to create the printing plates or their latter-day equivalents. Software like QuarkXPress is full of capabilities for handling such things. But this is all back-end stuff. I agree with Ellis. Asking for copy in CMYK is dumb because the correct CMYK conversion from RGB is dependent on exactly what press technology they are using and you won't necessarily know what is needed or be able to implement it if you do know, and doubly dumb because if they do need to do some colour matching to get it right, they will need to convert back to RGB first, and may not know how to invert the transformation you have used to get from RGB to CMYK.
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