Photoshop: What Does Byte Order choice mean in Tiff File Save Options ?

Discussion in 'Photoshop' started by Al Dykes, Feb 18, 2005.

  1. Al Dykes

    Al Dykes Guest

    I see IBM PC Byte order or Mac Byte Order as a choice when I do a file
    save-as. I know what BigEndian/LittleEndian is for CPU architecture
    but how does it apply to a tiff file ?

    Al Dykes, Feb 18, 2005
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  2. Al Dykes

    toby Guest

    That's right: it refers to the endianness of multibyte values used
    throughout the TIFF. However any half-decent TIFF reader checks the
    signature (first two bytes of the file) and can cope with either
    endianness, so the option really only exists today to cater for
    crippled readers. Occasionally examples crop up of workflows such as
    proprietary newspaper systems that insist on a particular byte
    toby, Feb 18, 2005
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  3. Al Dykes

    frankg Guest

    When I upload digital files to my lab for printing they specify to choose
    the IBM Byte order .

    Also my stock agencies when I send them Tiffs on CD.

    They're all on a Mac and I'm on a PC
    frankg, Feb 18, 2005
  4. Al Dykes

    Eric Gill Guest

    Don't bother. This hasn't made the least bit of difference since around
    Eric Gill, Feb 19, 2005
  5. Al Dykes

    toby Guest

    It *never* made any difference to Photoshop. But as noted above, it's
    still possible to occasionally find broken software and/or policies
    (more commonly) that require one ordering or the other.

    toby, Feb 21, 2005
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