Photoshop file converting to negative in pdf from Illustrator - Adobe illustrator

This is a discussion on Photoshop file converting to negative in pdf from Illustrator - Adobe illustrator ; I have a design with two grayscale photos, a portrait and a bridge. Both photographs have been converted to grayscale in Photoshop CS and saved as .psd then placed in Illustrator CS. They both look fine when working with them ...

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Photoshop file converting to negative in pdf from Illustrator

  1. Default Photoshop file converting to negative in pdf from Illustrator

    I have a design with two grayscale photos, a portrait and a bridge. Both photographs have been converted to grayscale in Photoshop CS and saved as .psd then placed in Illustrator CS.

    They both look fine when working with them in Illustrator and as an .ai file, but the portrait turns into a negative when I save the Illustrator file as a .pdf and open in Acrobat. The other photo, the bridge, is not affected.

    Any Ideas?? Is this a known issue?

    Dell P4 1GB RAM
    Win XP

    Adobe CS1 Suite
    Acrobat reader 8

  2. Default Re: Photoshop file converting to negative in pdf from Illustrator

    Yes, it is a known issue.

    The problem is fixed in CS2 (well, mostly fixed)

    Grayscale images with transparency will inverse their colors when saved to pdf. You can to 1.3 compatible pdf and the image will not invert.

    There are a few ways to go about this, but my memory is faded on the issue to recall the other methods of preventing inversion. You will need to find the best workflow for your needs.

  3. Default Re: Photoshop file converting to negative in pdf from Illustrator

    I found that it works if I print to the pdf driver instead of saving as pdf.

    You mentioned it's mostly fixed in CS2...I'm planning on upgrading to CS3 sometime this year, do you know if it's more fixed in 3?

    Thanks for the info.

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