Perfect Macro Technique

Discussion in '35mm Cameras' started by Paul Furman, Sep 13, 2009.

  1. Paul Furman

    Paul Furman Guest

    OK, just a nerdy penny shot, refining my technique:
    http://www.flickr.com/photos/edgehill/3916646842/in/set-72157622357931874/
    -follow the links in the description for full pixel versions from D700
    and gear setup shots.

    El-Nikkor 80mm f/5.6 enlarging lens on PB-4 Bellows at f/8 and 1:1
    magnification with extensive care taken to align the focus perfectly
    with the face of the penny. This is possible with the PB-4 tilt and the
    custom focusing rack/xyz positioning stage. The positioning stage is
    screwed onto a small board along with the bellows so that the subject &
    camera don't shake relative to one another. Use of an overhead projector
    for light makes it much more convenient to work stopped down and seems
    to give a good softbox shadow fill as well as a concentrated beam on the
    subject.

    Here's a closer view using a Spiratone 35mm f/3.5 bellows lens:
    http://www.flickr.com/photos/edgehill/3915973221/sizes/o/
    -full pixel version un-cropped off a D700 and does not come close to
    looking decent at that much higher magnification. The setup shot shows
    how much closer this focal length & magnification is:
    http://www.flickr.com/photos/edgehill/3916759914/in/set-72157622357931874/
    bellows fully extended and a lot better balanced & more stable, more
    compact. I can't test full size macro lenses on this setup, it's too
    short so the bellows lenses are ideal. Clearly the 35mm lens needs to be
    replaced though the El-Nikkor 80mm looks excellent at 1:1, all I could
    ask for & a lot more convenient and controlled than a tripod and 100mm
    regular macro lens. I can actually fit this rig in a shoebox and work it
    out in the field in sunlight. Before adding the overhead projector I had
    to set up next to the window to see with live view and stopped down, now
    I can comfortably arrange everything on the desk in front of me.

    --
    Paul Furman
    www.edgehill.net
    www.baynatives.com

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    Paul Furman, Sep 13, 2009
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  2. Paul Furman

    Paul Furman Guest

    The first link is close to 1:1, I can go up to 1.7:1 with the 80mm
    El-Nikkor. This is the best I could do closer-up at 5:1 with a cheap
    35mm Spiratone bellows lens:
    http://www.flickr.com/photos/edgehill/3916838459/sizes/o/in/set-72157622357931874/
    It's not really up to that much magnification. I tried some other old
    28, 35 & 50mm primes reversed but they got less detail. At that
    magnification the Spiratone did best wide open, the El-Nikkor does
    better stopped down on to f/8 but I don't have room to get closer.

    --
    Paul Furman
    www.edgehill.net
    www.baynatives.com

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    Paul Furman, Sep 14, 2009
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  3. Paul Furman

    stephe_k Guest

    stephe_k, Sep 15, 2009
    #3
  4. Paul Furman

    Paul Furman Guest

    That's OK as long as there's good light.
    Here's my same setup on a $5 bill:
    http://www.flickr.com/photos/edgehill/3923926958/in/set-72157622357931874/
    -that's a full pixel crop... like I said, not very sharp pixel for pixel
    but still amazing detail at 5:1 magnification.


    --
    Paul Furman
    www.edgehill.net
    www.baynatives.com

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    Paul Furman, Sep 15, 2009
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  5. Paul Furman

    stephe_k Guest


    My shot was full frame image, sorry for not pixel peeping with ya.

    Stephe
     
    stephe_k, Sep 15, 2009
    #5
  6. Paul Furman

    Paul Furman Guest

    That's a lot bigger in the frame. A year or so ago we had a
    5-dollar-bill-shooting-competition showing this same detail. I think
    Brett (Annika) won. What I learned this time is diffraction becomes a
    problem at those crazy magnifications. The crop I showed was wide open
    at f/3.5 and if I stop down to f/8 you see little circles instead of
    detail but f/3.5 has such a shallow depth of field that it's really hard
    to even get a piece of paper flat & aligned correctly :)



    --
    Paul Furman
    www.edgehill.net
    www.baynatives.com

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    Paul Furman, Sep 16, 2009
    #6
  7. Paul Furman

    Paul Furman Guest

    More like 4 or 5 years ago, here's the thread:
    http://groups.google.com/group/rec....read/thread/b40e1687189e80f6/aa7ced4678bb761c


    --
    Paul Furman
    www.edgehill.net
    www.baynatives.com

    all google groups messages filtered due to spam
     
    Paul Furman, Sep 17, 2009
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