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haneadino
Inspiring
June 10, 2022
질문

regarding High Quality PRINT to PDF, - about images in placed in InDesing as RGB

  • June 10, 2022
  • 2 답변들
  • 8959 조회

Thought to hear from you regarding High Quality PRINT to PDF,  about images in RGB.
Example: You make a booklet in InDesign of 20 pages, and with a lot of images, and and some images are in RGB. And when you finish the layout and export this file to High Quality PRINT to PDF, - - I mean that InDesign converts all images to CMYK? Just thought to know, - because when we sent the file for printing, they say that most images are in RGB in the PDF file for printing.
I remember in the old days, with old versions of InDesign, then I always had to open all my RGB images in Photoshop and convert them to CMYK and then place these CMYK images into InDesign, - - but I don't think you need to do this anymore in the new versions of InDesign! - is that correct?
What PDF preset should you use so that all images are in CMYK when export it to a PDF file, which you can then send to the print house?

Thank you so much for help!!

2 답변

rob day
Community Expert
rob dayCommunity Expert
Community Expert
June 10, 2022

Hi @haneadino , the default High Quality preset Exports all color unchanged—Output>Color Conversion:No Color Conversion.

 

I would avoid that preset because its Profile Inclusion Policy is Include Tagged Source Profiles, which would export native RGB colors and images with no embedded profile as DeviceRGB (RGB with no source profile). In that case even if the printer can make a color managed conversion to the correct CMYK space at output, it will be impossible to accurately convert the DeviceRGB color because there is no source color profile.

 

but I don't think you need to do this anymore in the new versions of InDesign! - is that correct?

 

Yes, that’s right, you can make the same color managed conversions from InDesign on Export or Output by setting the Output Destination to the correct CMYK profile. This PDF/X-4 preset would convert all of the document color into my document’s assigned CMYK profile Coated GRACol:

 

    H
    haneadino작성자
    Inspiring
    June 10, 2022

    Thank you so much @rob day 

    So with these DPF/X-4:2008 preset, and Color Conversion: Convert to Destioantion (cmy),  - and output profile: "Document CMYK - coated". It should be OK to sent to a printing-house? (I shall not print my self to a printer) So it will be printed as offset printing, in 4+4 color in CMYK.

    What scares me are the RGB images. Whether it will be a problem when it has to be printed as an offset on a 4-color offset machine in the Printing Company.

    Thank you so much for helping me

    Derek Cross
    Community Expert
    Derek CrossCommunity Expert
    Community Expert
    June 10, 2022

    Try some soft proofing to see how the RGB images might look when printed in CMYK.

      Derek Cross
      Community Expert
      Derek CrossCommunity Expert
      Community Expert
      June 10, 2022

      You should get the PDF spec from your printer. 

      Most authorities nowadays recommend PDF/X-4, keeping images in RGB and flat colours and text in CMYK, selecting single pages (not spreads) and ticking Use Document Bleed Settings and tick Crop Marks in the Adobe Export Dialogue box.

        H
        haneadino작성자
        Inspiring
        June 10, 2022

        Thank you!

        This should not be in any printer? But to a printing house.
        I know everything about bleed and cut marks. But just want to know regarding the RGB images in an InDesign file. Will they be converted to CMYK when exporting to High Quality print PDF ??

        just see my adobe preset: https://prnt.sc/0YFU-6Txq3w0

        rob day
        Community Expert
        rob dayCommunity Expert
        Community Expert
        June 10, 2022

        Will they be converted to CMYK when exporting to High Quality print PDF ??

         

        No.

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