Weird Bokeh with 150mm Sonnar

Discussion in 'Medium Format Cameras and Accessories' started by EASmithV, Sep 23, 2012.

  1. EASmithV

    EASmithV Member

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    I actually like it, but I was wondering if this was normal, or if it means something is on it's way out...

    7986016958_751201891a_z.jpg

    and to a lesser degree here;
    8014571717_fcd6f59d1b_z.jpg

    it doesn't affect exposure, but I haven't tried chromes yet.
     
  2. antmar

    antmar Subscriber

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    First picture gives the answer, as you can see in the lens your shutter blades are sticky and the shutter is not fully open, this gives a strange tornado like shape to any out of focus light (it is actually the shape of your shutter).
    The problem is less obvious with smaller apertures and it could be disappeared at f:8 or f:11.
    And yes it does affect exposure.
    Unfortunately you have to have your lens CLA'd.
     
    Last edited by a moderator: Sep 23, 2012
  3. brucemuir

    brucemuir Member

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    yep, I'm agreeing with antmar on this one. you can see the "ninja star" shape on the specular highlight on the chandelier.

    some of the lenses Zeiss made for contax/yashica mount actually feature this shape but those lenses do not contain shutters.

    looks like the shutter blades aren't opening fully and dragging/sticking (and probably the aperture blades as well)

    try taking the back off, open the aperture fully and fire a flash and you'll see the shape more pronounced.
    the effect will most likely change with differing shutter speeds also.
     
  4. jp498

    jp498 Member

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    I'd say aperture blades as the shutter blades are moving during the exposure and the aperture blades are not moving. It likely needs CLA.
     
  5. EASmithV

    EASmithV Member

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    Who is the best person to send it for CLA? How much will it run approx, and what is the turn around? Also, do you think use will fix the problem?
     
  6. MFstooges

    MFstooges Member

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    I think use will not fix the problem. It may disappear intermittently after heavy use but for sure will come back at bad timings.
     
  7. mike c

    mike c Subscriber

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    Heard good things about this guy here on your side of the country,http://www.david-odess.com/faq.html. Never used him my self, I'm on the west coast so its Samys or a couple of other guys here.

    Mike
     
  8. Richard S. (rich815)

    Richard S. (rich815) Subscriber

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    David Odess is awesome. I use him and I'm in the west coast (so shipping take 3-4 days instead if 1-2, big deal).
     
  9. mikebarger

    mikebarger Member

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    I've used Dave Odess and he's great!
     
  10. Chris Lange

    Chris Lange Member

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    Dave Odess or Nippon Photo Clinic in NYC will do a bang-up job on anything Hasselblad. Dave did my backs and a 150 for me this summer, and Nippon handled my 500C and 80/2.8 two years ago.

    Both did a fantastic job.
     
  11. lxdude

    lxdude Member

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    The aperture blades won't make that shape. The reason the shutter blades are sharply defined in the picture is because they did not open fully and are stuck partway until they close again.
     
  12. bdial

    bdial Subscriber

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    +1 on David Odess, I think his prices for things like lens CLA's are listed on his web site.
    Another possibility would be Zack's camera in Providence RI, he does very good work.
     
  13. BrianShaw

    BrianShaw Member

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  14. AZB&W

    AZB&W Member

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    On a side note, is that by chance a Paolo Soleri bell in your second photo?