save CMYK image into JPEG format

Discussion in 'Photoshop Tutorials' started by mariano.difelice, Dec 5, 2005.

  1. Hi guys,

    I've a problem with CMYK e JPEG file format:

    I'm using python for develop a program which generate an image file
    from a PIL RGB image.

    the problem is when i must save my image CMYK into a JPEG file.
    well, the result is that my new image is only black!
    but if I save my file in a .tif file, I'll see it well.

    I don't know why! I'm desperate! Please help me!!

    mariano.difelice, Dec 5, 2005
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  2. mariano.difelice

    tacit Guest

    There isn't really a standard way to save a CMYK JPEG; the original JPEG
    standard supported only RGB color. Adobe extended the standard to
    include CMYK with a semi-private APP13 tag; you might try taking apart a
    Photoshop CMYK JPEG and comparing it to the JPEG you're writing.

    Note that a CMYK JPEG can not be displayed in Web browsers and most
    other programs.
    tacit, Dec 6, 2005
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