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billef32
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CMYK values of an imported image don't match with CMYK in Illustrator

Mar 24, 2013 4:43 PM

Tags: #cmyk #print #pdf_printer #illustrator_printing

Hello everyone. I made a simple poster using photoshop to make the background and illustrator to make the fonts and some other stuff.

In CMYK my black is just 100% K ( in photoshop)

 

 

When placing image in illustrator the 100% K (black) changes to different black with C M Y added. But then when I save it as PDF the preview shows black as a bit grey (which is something normal- in print it will be just black). So my question is .. should I change enything just to be able to see a 100% K in illustrator in order to match CMYK values of Photoshop? Or should I leave it this way? I guess if I am getting a "grey" in PDF preview is something good isn'it? because in photoshop when I set to 100%K in my screeen it looks like grey and not total black.

 
Replies
  • Currently Being Moderated
    Mar 24, 2013 4:49 PM   in reply to billef32

    In Illustrator, go to Preferences > Appearance of Black > set view and output to "Accurate" Black, not "Rich" Black.  Black is Black and shouldn't be seen as Gray.  Check your monitor and make sure it is calibrated.

     
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  • Currently Being Moderated
    Mar 24, 2013 4:53 PM   in reply to billef32

    How is color management in the two applications set up? Which color profiles are you using? How do you treat differing profiles in Illustrator? Did you embed the image or link it?

     

    When displaying "exact black", 100 K will indeed look a little gray. But rich blacks might as well look gray, so you need to check in Acrobat print preview how black is set up.

     

    Ask your print service about how to set up black. It depends on machine and stock used and on how you want black to appear.

     
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  • Currently Being Moderated
    Mar 25, 2013 3:55 AM   in reply to billef32

    billef,

     

    Your description seems to imply that you have your File>Document Color Mode set to RGB Color.

     

    If that is the case, any CMYK colour will be converted into RGB, and the corresponding CMYK values will be distorted to the ugliest degree.

     

    For less conspicuous inconsistencies between documents, I believe the replies from John and Monika are the best guesses to follow up on (unless we are talking weirdnesses such as preference corruption and the like).

     
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  • Currently Being Moderated
    Mar 25, 2013 5:19 AM   in reply to billef32

    billef,

     

    The appearance also depends on the monitor (setting/calibration), but the different values point to something else. The right/synchronized colour management/settings across applications may be the cause: it has to be done with care.

     

    Just to rule out preference corruption, you may try to Move the folder ; you can move it back and retrieve your settings.

     

    Off to other duties, in the snow.

     
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  • Currently Being Moderated
    Mar 25, 2013 6:32 AM   in reply to billef32

    Does Overprint Preview alter anything?

    Is you image linked or embedded?

    Either or both can make a difference.

     
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  • Currently Being Moderated
    Mar 25, 2013 6:36 AM   in reply to billef32

    Please see Mike Gondek's very detailed reply (correcting me) concerning the eye dropper in THIS thread.

     

    --OB

     
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  • Currently Being Moderated
    Mar 25, 2013 6:41 AM   in reply to billef32

    Is your PSD linked or embedded? If linked, try embedding it. Do this in a copy of your working document. Then shift-click on your black and report what it reads.

     

    Take care, Mike

     
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  • Currently Being Moderated
    Mar 25, 2013 6:56 AM   in reply to billef32

    billef32 wrote:

     

    Monica I don't know how to check what color profile I am using in photoshop - Just in illustrator. "drag n drop" image - I guess this is linking images .

     

     

    What kind of drag and drop? The file from the finder into Illustrator? Or the content from Photoshop diretly into Illustrator? And if from the finder: please check if it is embedded.

     

    Also: in Photoshop you'll need a CMYK document. Setting only the color to 100% K in an RGB document won't be enough.

     

    Please read the manual on how to check the color profiles and how to set up color management.

     

    If  black in a placed image is already "rich" in Illustrators seperation preview there's no way for you to get  100 K out of it.

     
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    Mar 25, 2013 7:06 AM   in reply to billef32

    Linked:

     

    capture-000165.png

     

    Embedded:

     

    capture-000166.png

     

    I cannot remember if whether this was an issue pre-CS6 and I don't have earlier versions installed on this laptop any longer. I have always embedded PSD files anyway so don't know whether I would have noticed.

     

    The above are the same image. I dragged an dropped from the folder it was in and it was linked. First image by default was linked and the color is off. The PSD is CMYK (it is a color chart, actually). Clicking the Embed button results in the second image. Personally I think this is a bug. I cannot imagine this is by design.

     

    Mike

     
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  • Currently Being Moderated
    Mar 25, 2013 7:30 AM   in reply to billef32

    No one said you are a noob. At least that's not my reading of the other responses and it certainly wasn't my intention.

     

    While you can certainly have a CMYK JPG, why not place (and embed) the PSD? Just curious...

     

    That said, I get the exact behavior with a CMYK JPG as I get with a CMYK PSD for the linked versus embedded versions. That is, the linked CMYK JPG is off in color (black is a rich black for instance). The embedded version is correct (black is the correct percentage of K only).

     

    Mike

     
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  • Currently Being Moderated
    Mar 25, 2013 7:54 AM   in reply to billef32

    as i mentioned, I get the same results embedding the cmyk jpg as the cmyk psd versus linked so use which ever works for your purpose.

     

    the eye dropper works for me on windows. don't know if platform makes a difference or not.

     

    mike

     
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  • Currently Being Moderated
    Mar 25, 2013 8:01 AM   in reply to billef32

    OK, so you used the eyedropper to measure the black. THis was not clear in your initial post.

     

    You cannot take precise measure with the eyedropper in linked photos. It's simply not possible. sampling colors with pressed shift key will always sample the screen representation, i.e. go through color management.

     

    If you want to check colors, create a PDF and then use Adobe Acrobat.

     

    When embedding your linked images you have to take special care of color management to prevent CMYK-to-CMYK-transformations. And you have to check color profiles and you have to properly set up color management. Which of course apllies to saving a PDF as well.

     

    There's a huge document on print prdouction with Creative Suite, you might want to read it: http://rufus.deuchler.net/2011/06/adobe-publishes-a-new-creative-suite -555-printing-guide.html

     
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  • Currently Being Moderated
    Mar 25, 2013 8:08 AM   in reply to billef32

    So the gist is that if you need to pickup color in AI, the images need to be embedded. But the output to a CMYK PDF using the correct output profile will produce accurate color in the PDF:

     

    capture-000167.png

    Mike

     
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