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Thread: Disastrous Consequences (solved: fog with Intrepid lensboard)

  1. #21

    Join Date
    Dec 2014
    Location
    Iowa City, Iowa
    Posts
    1,165

    Re: Disasterous Consequences

    I have the same lens, the board needs to be cut to fit the shutter. There's a fellow in Chicago that makes marvelous lens boards for cheap. He's on Ebay. The shutter needs to be fully engaged and the shutter mounting nut should also fit into the lens board hole. Buy a flat metal shutter wrench to tighten the nut down.after all that's in place screw in the rear element.
    If you found the shutter loose I would suspect that's where your light strike came from.

  2. #22
    (Shrek)
    Join Date
    Mar 2011
    Location
    Montreal
    Posts
    1,763

    Re: Disasterous Consequences

    Assuming you only pull the dark slide just before taking a shot, and put it back in immediately after, that's a big light leak that should be quite easy to find by doing a light test. Nodda Duma says some of their lens boards aren't fully opaque, that would explain a really diffuse light leak like this one.

  3. #23

    Join Date
    Jan 2019
    Posts
    320

    Re: Disasterous Consequences


  4. #24

    Join Date
    Dec 2018
    Posts
    344

    Re: Disasterous Consequences

    Fun detective work!
    Now that you know how to seat the lens and retaining ring (it's not a "nut") properly...take the lens & shutter assembly off of the lens board, and paint the back side of the lens board with flat black paint....a couple coats.
    Let it dry, and reinstall the lens & shutter assembly.
    ....and Voila!

  5. #25

    Join Date
    Apr 2020
    Posts
    13

    Re: Disasterous Consequences

    Unbelievably, the lens board appears to be the problem. It is a genuine Intrepid lensboard and it isn't lightproof. I put a flashlight up against the lensboard and it just shines through. Click image for larger version. 

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    It sure looked light proof. I'm aghast. I will let Intrepid know about this.

  6. #26

    Join Date
    Apr 2020
    Posts
    13

    Re: Disasterous Consequences

    Not "appears" to be the problem - IS the problem. I read the comments but couldn't believe that it could actually be anything other than light proof.

  7. #27

    Join Date
    Jan 2019
    Posts
    320

    Re: Disasterous Consequences

    If you read the thread I posted you’ll see they’re aware and solved it by going from FR4 to Aluminum.

    I’ve done my fair share of PCBs in my early days and know quite well FR4 is not light proof....

    But yes, contact them and I’m sure they’ll send you a replacement in aluminum.

  8. #28

    Join Date
    Apr 2020
    Posts
    13

    Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    Yes, I read those notes, but after earlier comment. I'm sure they'll send me a new one. Still - amazing that could happen. Well, problem solved, I guess.

  9. #29

    Join Date
    Jan 2019
    Posts
    90

    Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    Translucent board?? How does something like that go into production without testing?

  10. #30

    Join Date
    Mar 2005
    Location
    Newbury, Vermont
    Posts
    1,034

    Re: Disastrous Consequences (solved: fog with Intrepid lensboard)

    speechless...

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