4/3rds users consciously obtuse? DOF

Discussion in 'Digital SLR' started by RichA, Feb 2, 2011.

  1. RichA

    RichA Guest

    Since when do people talk about bokeh and mean ultra close-ups of
    plates of food? It can mean that, but most people when they speak of
    bokeh are referring to images of people or other things with a blurred
    background. Such shots generally aren't taken from 6 inches away. In
    that light, the original poster here has a point, it is hard to get a
    background blur with a 4/3rds sensor because of its size. It's
    something you live with, or buy an APS or FF sensor. The posts that
    follow are both sad and silly, as they only offer extreme close-ups in
    order to "prove" that a defocused background can be achieved on a
    4/3rds sensor. On a brighter note, it is possible the new GH2 is
    faster focusing than any DSLR.

    http://forums.dpreview.com/forums/read.asp?forum=1041&message=37614690
     
    RichA, Feb 2, 2011
    #1
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  2. RichA

    Bruce Guest


    Bokeh does not mean "out of focus" or "blurred background", but the
    *visual quality* of the out of focus elements of a shot. If you don't
    understand the term, don't use it or comment on others' usage.
     
    Bruce, Feb 2, 2011
    #2
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  3. RichA

    Vance Guest

    It has never stopped him in the past. I doubt it will stop him in the
    future.

    Vance
     
    Vance, Feb 2, 2011
    #3
  4. RichA

    Bowser Guest

    Yeah, right...

    I'd love to see the proof of that one (focusing faster than *any* DSLR).
     
    Bowser, Feb 2, 2011
    #4
  5. RichA

    John A. Guest

    A pinhole camera beats them all. :)

    But of course you can get (or make) pinhole "lenses" for DSLRs, so I
    guess that doesn't really count.
     
    John A., Feb 2, 2011
    #5
  6. RichA

    Allen Guest

    But it loses that speed-of-focusing advantage when it comes to exposure.
    Allen
     
    Allen, Feb 2, 2011
    #6
  7. RichA

    Allen Guest

    Actually, I seem to recall an article from a few years ago about making
    a pinhole for a DSLR. Pinholes reminds me of the of the once-common dry
    cleaners sign "In by 9 Out by 5".
    Allen
     
    Allen, Feb 2, 2011
    #7
  8. RichA

    John A. Guest

    In recent years I've heard that as part of a local dry-cleaner's
    jingle on the radio. Dry Clean Depot, IIRC.

    There was another that one-upped them with a sign that said "In by 10
    dirty, out by 4:30". That's progress, for ya.
     
    John A., Feb 2, 2011
    #8
  9. RichA

    John A. Guest

    IIRC, there's an Instructable or two on that. Been meaning to get a
    black body cap to try it. The one that came with my camera is
    translucent white. :p
     
    John A., Feb 2, 2011
    #9
  10. RichA

    Savageduck Guest

    Savageduck, Feb 2, 2011
    #10
  11. RichA

    Peter N Guest

    Here's a great sign with a golf & photography tie in.

    http://www.golfcoursepictures.net/art-ph6021.html
     
    Peter N, Feb 2, 2011
    #11
  12. RichA

    Rich Guest

    There IS no visual quality when there IS no blur. Bokeh= ZERO, no
    good, no bad.
     
    Rich, Feb 2, 2011
    #12
  13. RichA

    Rich Guest

    The images stink anyway. Pinhole shots only look good with large
    format film.
     
    Rich, Feb 2, 2011
    #13
  14. RichA

    Rich Guest

    We'll have to wait and see. Meanwhile, a friend got a D5000 Nikon
    and kit lens and its focusing is terrible. Slow, hunting, uncertain.
    A G1 (original mirrorless camera) is much faster and more sure, even
    in dim light with the same speed lens.
     
    Rich, Feb 2, 2011
    #14
  15. RichA

    Bruce Guest


    Thanks for proving beyond reasonable doubt that you haven't the
    faintest idea about bokeh. You are Alan Browne and I claim my $5.
     
    Bruce, Feb 2, 2011
    #15
  16. RichA

    Tom Guest


    You are right. Bokeh isn't about DOF, but the quality of out of focus.

    But it's not just about the sensor, because for example, I can clearly see
    the difference between a Canon 50 1.8 and a 1.4/1.2 on an APS camera, even
    on a post cropped pic.
     
    Tom, Feb 2, 2011
    #16
  17. RichA

    John A. Guest

    John A., Feb 2, 2011
    #17
  18. RichA

    Bowser Guest

    I'll buy that, but to make a claim that the GH2 is faster than a Canon
    1d IV or a Nikon D3s? I'd bet a year's pay against that one.
     
    Bowser, Feb 2, 2011
    #18
  19. RichA

    tony cooper Guest

    In my opinion, bokeh - what you see in an image that is out-of-focus -
    cannot be described with the word "quality". It is neither of good
    quality nor of bad quality. We judge bokeh aesthetically; to decide
    if it does, or does not, provide a pleasing aspect to the image.

    We say "bad bokeh" when the out-of-focus aspects are jarring and
    distracting. We say "good bokeh" when the out-of-focus aspects blend
    in in such a way that they don't distract or pull the eye from the
    primary subject matter.
     
    tony cooper, Feb 2, 2011
    #19
  20. RichA

    Bruce Guest


    You should hang on to your year's pay, because I have just finished
    testing a GH2 and the focusing is very quick indeed. I have no
    facilities to test AF speeds, however it felt every bit as fast as my
    Nikon D3.

    I sent it off to the lab where they will do a series of more detailed
    technical tests including a comparison of AF speed with a Sony A55,
    Pentax K5, Nikon D7000 and Canon EOS 7D.

    The 16 MP sensor is disappointing because noise is apparent at
    anything above base ISO.
     
    Bruce, Feb 2, 2011
    #20
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