save jpg as tif before editing?

Discussion in 'Photoshop' started by J. A. Mc., Aug 31, 2005.

  1. J. A. Mc.

    J. A. Mc. Guest

    NO ... just do it on your FIRST save.
     
    J. A. Mc., Aug 31, 2005
    #1
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  2. J. A. Mc.

    frankg Guest

    Trying to retain the best possible quality, will I be maintaining the files
    integrity by taking jpegs shot with a digital camera and first saving a
    duplicate as Tif, and then doing the photoshop editing on it ?
     
    frankg, Aug 31, 2005
    #2
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  3. J. A. Mc.

    J. A. Mc. Guest

    no.

    save as, AFTER !
     
    J. A. Mc., Aug 31, 2005
    #3
  4. J. A. Mc.

    frankg Guest

    So first do all the PS editing (col, contrast, retouching, sharpening etc)
    on the Jpeg and Then when done Save As a Tif file ?
    The first problem I see with this is that I cant do any layers on the jpeg,
    but if it's going to retain better file quality I'll work without layers.
     
    frankg, Aug 31, 2005
    #4
  5. J. A. Mc.

    tactic Guest

    can't you shoot raw or tif in the foist place?
     
    tactic, Aug 31, 2005
    #5
  6. J. A. Mc.

    _+arrooke Guest

    Won't make any difference. Save as tiff first. Jpg looses quality each time
    you alter and re-save.
     
    _+arrooke, Aug 31, 2005
    #6
  7. J. A. Mc.

    frankg Guest

    No unfortunately the camera I am using on this particular project (Canon S2
    IS) has Jpeg only - best i can do is choose superfine compression & Large
    qjality. So now I am trying to figure the best workflow with what I have in
    front of me - jpegs.
     
    frankg, Aug 31, 2005
    #7
  8. J. A. Mc.

    edjh Guest

    You have to understand that when the file is open for editing it does
    NOT have a format (jpeg is a compression standard rather than a file
    format anyway). So you can do layers etc. What matters is how you save
    at the end.
     
    edjh, Aug 31, 2005
    #8
  9. J. A. Mc.

    J. A. Mc. Guest

    GEE .. I do layers on .jpg original imagery all the time. Must be another
    'improvement' in the latest version. 5.5 doesn't seem to care what it opens
    - it works away, then you 'save as' in .tif or .psd and when finished 'save
    a copy' into .jpg to flatten and have a webbie.

    Coming from an original .jpg it is what it is, changing the file type
    -during- editing makes no sense or difference (well at least not in 5.5)!
    FINAL or INTERIM saves, there's the potential for loss, so you 'save as' in
    a lossless format.
     
    J. A. Mc., Aug 31, 2005
    #9
  10. J. A. Mc.

    Mike Guest

    It is only a jpeg until you load it in. Once any image is imported into photoshop you can do layers, filters, whatever,
    to your hearts content. When you have completed this process and want to save the work is the point at which you neeed
    to decide what file format you want.

    For example, if there is any possibility that you will want to come back and do further editing you may want to save it
    as a .psd file with all the layers intact. If you won't ever want to alter things again but want the best possible
    quality, you could flatten it and save it losslessly as a .tiff file. If you want a little more compression save it as
    a .jpeg file. If you want more than one option, save it losslessly first, then save a copy - e.g. as a highly
    compressed image to send to Uncle Harry via email.

    Mike
     
    Mike, Aug 31, 2005
    #10
  11. J. A. Mc.

    frankg Guest

    assuming working with a jpeg - if as you do a bunch of editing & you save
    the file along the way, doesnt each Save cause you to lose data/quality? In
    which case it'd be better to convert (Save As) a tif right off the top ?
     
    frankg, Aug 31, 2005
    #11
  12. J. A. Mc.

    J. A. Mc. Guest

    Nope !!! The image is never uncompressed and recompressed in such a move.

    OPEN it in a program and then 'move it' (save as, save to, whatever!) from
    within the program and yes, it gets recompressed and more is lost.
    You're renaming the entry on the FAT, not IN the file.
    "agree's" ... what belongs to 'agree'?
     
    J. A. Mc., Sep 1, 2005
    #12
  13. J. A. Mc.

    J. A. Mc. Guest

    IIRC ... there are some programs (and PS may have the switch option) that
    re-open a file after saving. IF that occurs, then a degredation will take
    place.

    OTW, as you say very clearly, the file in memory is NOT compressed, QED an
    infinite number of changes may be made UNTIL the file is reopened, usually
    by saving and exiting. At THAT time, if a lossy file mode has been chosen,
    upon re-opening and aditional editing, further loss will take place.
     
    J. A. Mc., Sep 1, 2005
    #13
  14. J. A. Mc.

    OcTavO Guest

    Personally I save as PSD, make all my changes, and then save a flattened
    version as a TIFF when I'm done.

    Someone once told me that JPG set on 12 is actually lossless, though I
    haven't tested this and I'm not sure I believe them... can anyone verify?
     
    OcTavO, Sep 1, 2005
    #14
  15. J. A. Mc.

    tacit Guest

    Yes.
     
    tacit, Sep 1, 2005
    #15
  16. J. A. Mc.

    frankg Guest

    then contrary to some posts above, i should indeed immediately Save As the
    jpeg file to a psd or tif PRIOR to doing any editing.
    the only time the Save As can be left to the end is is there is no saving of
    the file during the course of the image editing correct ?
     
    frankg, Sep 1, 2005
    #16
  17. J. A. Mc.

    Greg N. Guest

    No.

    you can save it a thousand times in one session, it will always be the
    same quality.

    It's when you re-open a jpeg and save it again where you lose quality.
     
    Greg N., Sep 1, 2005
    #17
  18. J. A. Mc.

    Hecate Guest

    There is no such thing as a lossless jpg file.

    --

    Hecate - The Real One

    Fashion: Buying things you don't need, with money
    you don't have, to impress people you don't like...
     
    Hecate, Sep 1, 2005
    #18
  19. J. A. Mc.

    Cyli Guest

    Correct. If you edit and save and edit and save (I tend to), then
    you'll want your save to be other than jpg at any time you're saving.

    Cyli
    r.bc: vixen. Minnow goddess. Speaker to squirrels.
    Often taunted by trout. Almost entirely harmless.

    http://www.visi.com/~cyli
    email: (strip the .invalid to email)
     
    Cyli, Sep 1, 2005
    #19
  20. J. A. Mc.

    Cyli Guest

    It's not bad, especially if you only do it once, but with other
    formats so much more accurate, why do it, except for snapshots for
    email?

    Cyli
    r.bc: vixen. Minnow goddess. Speaker to squirrels.
    Often taunted by trout. Almost entirely harmless.

    http://www.visi.com/~cyli
    email: (strip the .invalid to email)
     
    Cyli, Sep 1, 2005
    #20
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