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b/w image in cmyk?

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  #1  
Old 10-14-2010, 05:14 PM
czerwony czerwony is offline
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b/w image in cmyk?

I'm trying to convert a RGB image to CMYK. I'm working on a b/w image (all the 3 channels in RGB are equal) however when I convert it to CMYK (image - mode - cmyk) the new channels are not equal anymore.

What is the correct way to get them equal? I tried working on levels adjusting the highlights, midletones and shadows but it seems impossible to get all the 3 channels equal in shadows, midletones and highlights when using levels?

Am I using the right tool? Any help would be very much appreciated.
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Old 10-14-2010, 05:44 PM
czerwony czerwony is offline
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Re: b/w image in cmyk?

OK, had a few more attempts using levels and got to the stage where the difference between channels is "2" (the "worst" reading reads C 67, M 65, Y 66). Would that be acceptable to print in a magazine without noticeable colour shift???

Thanks
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Old 10-14-2010, 06:01 PM
pixelzombie pixelzombie is offline
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Re: b/w image in cmyk?

equal amounts of CMY will NOT be neutral, it does not work like RGB, the reason for that is due to contamination of printing inks..let the printer do the conversion as it will be tailored to their printing conditions...
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