Handa made RAF Biogon 38mm unit

Discussion in 'Medium Format Cameras and Accessories' started by stonemute, Apr 4, 2012.

  1. stonemute

    stonemute Member

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    Hi all,

    I made a lens unit of Biogon 38mm f4.5 from a R.A.F.(Royal Air Force) aero lens.

    Lens unit I bought from eBay.
    Biogon00.JPG

    Remove the lens by using a lathe.
    biogon_MC.jpg

    Design the adapter with a 3-D CAD.
    biogon38_compur.jpg
    adapter_f_drw.jpg

    Finished part of the adapter.
    adapter_f.jpg
    adapter_r.jpg

    Then, the lens unit was completed.
    Biogon_Compur.jpg

    Was required very, very advanced design capabilities and machining accuracy.
     
    Last edited by a moderator: Apr 4, 2012
  2. brucemuir

    brucemuir Member

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    Impressive.
    Let us know how it shoots.
     
  3. Richard S. (rich815)

    Richard S. (rich815) Subscriber

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    Very nice. Pls share some results later.
     
  4. stonemute

    stonemute Member

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    > bruce muir
    Now, I'm making a 6x7 camera. :smile:

    assy_temp2m.jpg
    bellows_temp.jpg
     
    Last edited by a moderator: Apr 4, 2012
  5. stonemute

    stonemute Member

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    > Richard S.
    Thanks.
    I will post some results about one month later, because I'm making a camera.
     
  6. bushpig

    bushpig Member

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    That's fantastic! I can't wait to see more!
     
  7. Trask

    Trask Subscriber

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    I greatly admire your obvious skill. What beautiful work.
     
  8. smiling gecko

    smiling gecko Member

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    that's an amazing bit of creation you have made! it is science expressed as an art.

    my skill level is dremel tool dabbling/vise grip clamping/taking "it" to a skilled repair person to undue my "doing".

    now, if you could conjure up with a visoflex for a mamiya6...ooh, those longer RB67 lenses. :whistling:

    good luck and good hunting.

    breathe, relax and enjoy.
    smiling gecko, aka kenneth
    www.neverforgetbeslan.org
     
  9. keithwms

    keithwms Member

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    Great work, I also look forward to seeing results!

    What was the net cost of this lens, for you to make it?
     
  10. steven_e007

    steven_e007 Member

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    This I like... it inspires me to go and tidy up the junk in my garage and get to work on finishing one of my many, many (MANY) uncompleted projects.

    I think it will have to be the wide angle 91/2" square camera with the 6" Ross lens, first :smile:
     
  11. Argenticien

    Argenticien Member

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    stonemute, that is indeed impressive! Have you tested the image circle of the lens to determine whether it could cover film formats larger than 6 cm x 7 cm? (Apologies if this is an ignorant question. Maybe the answer is already obvious to readers who shoot large format, but I am not among them!)
    --Dave
     
  12. keithwms

    keithwms Member

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    Sounds like there are already people here who'd like to place orders! This is great.

    I'd like something in a ~210-300 mm focal length that covers 5x7 and is f/2.8, please :smile:
     
  13. stonemute

    stonemute Member

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    Thanks! I can't wait too, but I need many time to make a camera.
     
  14. stonemute

    stonemute Member

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    > Trask
    > smiling gecko
    Many thanks!
     
  15. stonemute

    stonemute Member

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    The net cost of adapter is $190(including nitride & anodized),
    biogon is $320(including shipping cost to Japan).
    Not included my manpower. :wink:
     
    Last edited by a moderator: Apr 6, 2012
  16. stonemute

    stonemute Member

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    > steven_e007
    6" Ross lens!
    I want to make a camera with Ross too!
    I cannot wait completion of your project. :smile:
     
  17. stonemute

    stonemute Member

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    The image circle is 84mm.
    It is just covered 6x7, impossible to take 6x8, impossible to rise.
     
  18. stonemute

    stonemute Member

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    My next project is mid range focal length rangefinder camera. :wink:
     
  19. keithwms

    keithwms Member

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    To compete with the mamiya 7 w/ 210mm lens, please! I don't mind scale focusing....