Petzval lens, new sample pictures

Discussion in 'Digital Cameras' started by Sandman, Sep 11, 2013.

  1. Sandman

    Sandman Guest

    DxO FilmPack Creative Blur.[/QUOTE]

    Not sure we have the same version, I have a "Creative blur vignetting",
    I'm assuming that's the one you're talking about here.

    I'm fiddling with the settings here, you weren't very specific, but try
    as I might, I can't get it to only affect the background based on the
    depth of field in the picture. How do you do it?
    I can't find this in the filmpack at all. Is this a variable for the
    "Creative Blur" above or is a separate setting?
     
    Sandman, Sep 17, 2013
    #21
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  2. Sandman

    Eric Stevens Guest

    Eric Stevens, Sep 18, 2013
    #22
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  3. Sandman

    Sandman Guest

    There is always ONE that defies the rule :)
    Sure, Macro lenses benefit from IS.
    Me neither.
    I love the bokeh on my Nikkor 85/1.4G. A good example is here:

    http://jonaseklundh.se/pages/Bilderna_Framkallade

    The color photo at the bottom.
    Huh, never seen that in any of my IS lenses that I can remember. Here
    are some quick test shots from the 80-400mm IS-lens from Nikon:

    http://jonaseklundh.se/pages/Af-s_Nikkor_80-400mm_45-56g

    While not particularly fantastic bokeh in itself, it doesn't look shaken
    or duplicated as far as I can make out.
    Portrait mostly. It's what it's for after all. I'm certain that it will
    be a great lens for video as well in certain settings.
     
    Sandman, Sep 18, 2013
    #23
  4. Sandman

    PeterN Guest

    Wow. If you think that is a *similar effect* then there is nothing more
    I can say. Enjoy your "easily and uncontrollably reproducible" Petzval
    effect, Peter.
    [/QUOTE]

    Note I did not say that was a final effect. Only a start. Last night I
    was getting my digital images ready for our CC competition. Today and
    tomorrow I am doing my prints, and Friday through the weekend, I have
    some priority things to handle.
    Hint make a selection with a lot of feathering, then invert it. play
    with the creative blur in FilmPack, then apply a sircular swirl, or
    polar coordinate to the blur. There is no simple formula, you have to
    play until you get an effect you like. As I said, I really did not
    expect too much from the image I played with. Try using what I said.
    while it won't be exact, you will get some interesting results.
     
    PeterN, Sep 18, 2013
    #24
  5. Sandman

    PeterN Guest

    se my resonse to Jonas.
     
    PeterN, Sep 18, 2013
    #25
  6. Sandman

    PeterN Guest

    Agreed. However, I sometimes use my 70-200 as a macro lens and get
    reasonably decent bokeh.
     
    PeterN, Sep 19, 2013
    #26
  7. Sandman

    Sandman Guest

    Note I did not say that was a final effect. Only a start.[/QUOTE]

    So maybe not so "easily" then, huh?
    I need a more detailed step by step here of this easy process. Not
    "hints".

    For it to be easy, I can't be expected to *manually* select the depth of
    field that should be effected, that's an enormous amount of work if you
    have some 500+ images to do it on.

    Also, the "creative blur" in Filmpack looks nothing like the Petzval
    effect and the circular swirl solidifies the "looks nothing like" part
    of its appearance.
    Wait, what? Is this not what you said:

    PeterN <>
    <>

    The effect is easily and uncontrollably reproducible with
    software

    Sounds like you're contradicting yourself here...
    I may. What I won't is get the Petzval lens effect from your
    suggestions, and certainly not "easily".

    The problem, for anyone interested, is that trying to add the Petzval
    effect in post is working with a 2D image, while the real effect is a 3D
    defocus result.
     
    Sandman, Sep 19, 2013
    #27
  8. Sandman

    Sandman Guest

    se my resonse to Jonas.[/QUOTE]

    Your response to me didn't make the process you suggested any more
    applicable.
     
    Sandman, Sep 19, 2013
    #28
  9. Sandman

    PeterN Guest

    So maybe not so "easily" then, huh?
    I need a more detailed step by step here of this easy process. Not
    "hints".

    For it to be easy, I can't be expected to *manually* select the depth of
    field that should be effected, that's an enormous amount of work if you
    have some 500+ images to do it on.

    Also, the "creative blur" in Filmpack looks nothing like the Petzval
    effect and the circular swirl solidifies the "looks nothing like" part
    of its appearance.
    Wait, what? Is this not what you said:

    PeterN <>
    <>

    The effect is easily and uncontrollably reproducible with
    software

    Sounds like you're contradicting yourself here...
    I may. What I won't is get the Petzval lens effect from your
    suggestions, and certainly not "easily".

    The problem, for anyone interested, is that trying to add the Petzval
    effect in post is working with a 2D image, while the real effect is a 3D
    defocus result.
    [/QUOTE]

    OK I should have said "the effect should be easily...." It looks like
    there is a learning curve.

    i took a few minutes Google and found this interesting article which say
    that I was wrong.

    <http://www.mauritsbollen.com/2012/06/petzval-lens-swirl/>
    This now sounds like a challange for me, to be added, if I get in the mood.
     
    PeterN, Sep 19, 2013
    #29
  10. Sandman

    Sandman Guest

    OK I should have said "the effect should be easily...." It looks like
    there is a learning curve.[/QUOTE]

    If by "learning curve" you mean "practically impossible", as you have
    found out:
    Well, good luck. As quoted by an image processing engineer:

    "In other words, the answer to your question is "no." If you want an
    image that looks like it was shot with a petzval, by FAR the least
    painful option is to... shoot with a petzval."
     
    Sandman, Sep 19, 2013
    #30
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