CMYK conversion issues

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  • Updated 3 weeks ago
Hi 

I am converting an RGB psd file to CMYK, but the colors are slightly different when using a different Mac, even when using the same color profile to do the conversion. Is there any reasons for this to happen? How can I make sure they produce the same results. 

The reason I have to convert it in separate machine is, when converting to CMYK, I have to flatten the layers due to some layer effects. When my vendor have to adapt my artwork to different layout and do some minor position changes to the layers they will have to do it in the original RGB file and then flatten it to do the CMYK conversion. I am assuming the result of the conversion should be the same if we use the same color profile, but that is not the case.

Hope some one can shine a light on this. Any help is greatly appreciated .

I understand that there will be some color changes when converting to CMYK, the changes are acceptable as long as they are consistent.


Thanks ahead for any help.





  
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yiing Fan

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Posted 3 weeks ago

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Photo of christoph pfaffenbichler

christoph pfaffenbichler, Champion

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I am assuming the result of the conversion should be the same if we use the same color profile, but that is not the case.
Does the RGB File definitely have its profile embedded? 
Also the conversion employs more parameters than the destination color space, there are also Engine, Inent and Black Point Compensation. 
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Warren Heaton

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Are all the computers being used callubrared with the same calibration hardware? Also, do all the displays support the same color space?
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Johan Elzenga, Champion

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This is completely normal. When you convert an image to CMYK, you are still looking at that CMYK result on an RGB monitor, so the CMYK values are converted to the monitor color space. Two different monitors means two different conversions, and so different results.