cannot convert 16 bit to 8 bit

Discussion in 'Photoshop' started by Peter, Nov 15, 2007.

  1. Peter

    Peter Guest

    Using CS3
    operating system Windows XP Professional
    I have an image that I have done a lot of work on that I cannot convert from
    16 bit to 8 bit. The bit conversion section is grayed out whenever this
    image is open. I tried closing and opening. I also tried CS2, without
    Also, on this same image when I click on a layer the layer does not
    highlight unless I double click and get the layer options menu.

    Does anyone have any suggestions.
    I do not have this issue with other files.

    Peter, Nov 15, 2007
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  2. Peter

    Kurt Knoll Guest

    Did have the same problem one time. Save it as jpg. do you work and save it
    as tiff again.

    Kurt Knoll.
    Kurt Knoll, Nov 15, 2007
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  3. Peter

    Peter Guest

    Thanks, but saving as a tiff didn't work and as far as I know, a 16 bit file
    cannot be saved as a jpg.

    I came up with a work around: I copied the file, layer by layer to a new
    file. What a PITA, but I had to complete the project.
    Peter, Nov 15, 2007
  4. Peter

    Joel Guest

    I just don't see why not! I do it pretty often, but since I do in memory
    so I don't remember all small steps (or exactly where to locate the
    command), so I may give wrong direction.

    1. From the MENU where you can select "Level", "Curves" etc. you select
    "MODE" then change to "8-bit", "16-bit" and even "32-bit"

    That's it! you just select "8-bit" then you have it!

    2. Now, just save and you have 8-bit image saved.
    Joel, Nov 15, 2007
  5. Peter

    KatWoman Guest

    is the image file "read only"????
    try save as...
    KatWoman, Nov 15, 2007
  6. Peter

    Prima Guest

    Prima, Nov 16, 2007
  7. Peter

    Peter Guest

    thanks tried everything. As I posted above, I copied all to a new file,
    layer by layer, and was then able to convert.
    Peter, Nov 16, 2007
  8. Peter

    Hunt Guest


    I've read down the thread, but have replied to the original. I also saw that
    you got what you needed, with some work. However, I have a question: did you
    try a Save_As to either another PSD or a TIFF? I work in 16bit and do all
    work, up to the point that I must go to 8bit, for either Filters, or for final
    output. Never have I seen the Mode>8bit greyed out. Could you do a Save_As,
    and if so, did it still refuse to allow Mode>8bit? Just curious.

    Glad that you finally got out of the situation,

    Hunt, Nov 17, 2007
  9. Peter

    Brian Guest

    Hi Peter,

    as per others here, I have never seen the issue you describe If you have to
    rebuild a new file to get the end result, then have you tried using the
    command Image>Duplicate instead of creating a new file and copying all the
    layers across?

    Best regards,
    Brian, Nov 17, 2007
  10. Peter

    Joel Guest

    I have noticed one of the message mentioned he tried to save JPEG at
    16-bit which is no-existing, but because he is top-posting so I won't
    response to the message (cuz I just don't like having conversation with
    Joel, Nov 17, 2007
  11. Peter

    Peter Guest

    My workflow is similar to yours. I tried a "save as" both tiff and psd, with
    no luck. I also tried opening the file is CS2. In all cases I could not
    convert to 8 bit. There must have been something I did in the file. Strange
    Peter, Nov 17, 2007
  12. Peter

    Peter Guest


    Peter, Nov 17, 2007
  13. Peter

    Peter Guest

    Thanks, but I did not think of that solution. Since I deleted the original
    file, I cannot try it.
    Hope that was just an anomaly and none of us run into the issue.
    Peter, Nov 17, 2007
  14. Peter

    Peter Guest

    I had hoped that my top posted message would be taken for what it was. But,
    as long as some of us are being picky, I didn't say I tried to save as a

    However, I do appreciate the purpose of this group and will not get into a
    top vs. bottom posting discussion, or any other discussion that is not
    directly on point with improving user experience with PS.
    Peter, Nov 17, 2007
  15. Peter

    Hunt Guest


    I missed that one completely. Of course one cannot save a 16-bit image to JPG.
    Thanks for pointing this out.

    Hunt, Nov 24, 2007
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