Tool for converting 12-bit TIFF images to 16-bit TIFF-images?

Discussion in 'Digital Cameras' started by Peter Frank, Dec 10, 2004.

  1. Peter Frank

    Peter Frank Guest

    Hi,

    I have some pictures taken by a CCD camera that are 12-bit TIFF
    images. Photoshop (7.0) - even tough it opens them without an error
    message - obviously cannot handle these properly as all images appear
    totally black.
    However, AFAIK Photoshop *can* handle 16-bit TIFF images, so what I
    want to do is convert the 12-bit TIFF images to 16-bit TIFF images.
    Conversion to 8-bit TIFF images is not an option because the images
    are supposed to be used for quantitative evalutations (intensity
    values) and I do not want to lose any information.

    Hence, my question is: Which tool can convert 12-bit TIFF images to
    16-bit TIFF images (or which tool allows opening 12-bit TIFF images
    correctly and saving as 16-bit TIFF images)?

    Peter
     
    Peter Frank, Dec 10, 2004
    #1

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  2. Peter Frank

    RSD99 Guest

    RSD99, Dec 10, 2004
    #2

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  3. Peter Frank

    Tony Guest

    Photoshop does the converting internally, there is soe other problem. Have
    you tried opening them in some other program?
     
    Tony, Dec 11, 2004
    #3
  4. Peter Frank

    Peter Frank Guest

    Peter Frank, Dec 11, 2004
    #4
  5. Peter Frank

    Peter Frank Guest

    Yes, I did. IrfanView and ThumbsPlus open and display them correctly.
    Kodak Imaging for Windows doesn't.

    Peter
     
    Peter Frank, Dec 11, 2004
    #5
  6. Peter Frank

    Tony Guest

    It sounds like there has to be something non-standard in the tiffs that
    some programs can read and others can't. Have you tried emailing Adobe with
    the model number of your camera to see if it is a known incompatibility?
    You might check with customer service for the camera company too.
     
    Tony, Dec 11, 2004
    #6
  7. Peter Frank

    RSD99 Guest

    Another program that works quite well with 16 bit images is Picture Window
    (including the "Pro" version). The author has stated something like "all
    operations are internally 16-bit," but I don't specifically know if it will
    open your 12 bit images. It is a full featured photographer's image editor,
    and might be worth a try. I think that they have trial version(s), and the
    total cost of the program is reasonable.

    http://www.dl-c.com/Temp/
     
    RSD99, Dec 11, 2004
    #7
  8. Peter Frank

    Peter Frank Guest

    Problem solved. It was something I really could have thought of. For
    some reason, the standard settings of contrast/brightness in Photoshop
    were inappropriate for these images. By changing these settings, the
    images became visible. I just didn't think of this in the first place
    because IrfanView displayed them correctly without the need of any
    manual adjustments. Anyway, everything is OK now.

    Thanks to everyone for your help.

    Peter
     
    Peter Frank, Dec 12, 2004
    #8

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