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Thread: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

  1. #1
    Unwitting Thread Killer Ari's Avatar
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    21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    I just bought one of these off eBay, and while i wait for it to arrive, I thought I'd get a lens board together.

    Can someone who owns this lens tell me what size hole I will need to make in my lens board?

    I'm hoping it will just fit onto a Technika board, but it will probably have to go on a 6x6 Toyo board.

    Any help appreciated; thanks in advance.

  2. #2
    Will Whitaker's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Ari, I think it will fit a Tech board, but I'll have to double-check. I'm not at home right now, but will be tomorrow and will get back to you.

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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    3.11" hole for flange on mine.

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    Unwitting Thread Killer Ari's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Thanks, guys.
    Will, if you can confirm Randy's measurement, please let me know by email.

  5. #5
    Will Whitaker's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Ari, I sent you an email.

    My flange measures a hair under 3 15/16. The barrel itself measures right at 2 5/8". I think Randy is measuring the diameter of the boss on the back of the flange. That would be the part that would need to seat in the lensboard. And yes, that would fit into a Tech board. The outside diameter of the flange extends pretty much to the edge of the board.

    I think the flange could be milled to allow it to fit on a Tech board and still leave room for the retaining hardware. Or a machinist could bore and thread the metal lensboard so that the lens screws in directly. A larger lensboard would make it simpler, but it could be done on a Technika board with the help of a skilled machinist.

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    Unwitting Thread Killer Ari's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Thank you, Will; I received your email, and it looks like I'll be trying this with a Technika board after all.
    Thanks to you as well, Randy.

  7. #7
    Will Whitaker's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Ari - If you choose to have the lensboard threaded, you'll need to check the thread pitch, since if it is too coarse, there may not be enough "meat" in the lensboard. There may be other options... Your machinist will advise, I'm sure

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    Unwitting Thread Killer Ari's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Understood, Will; thank you.
    For posterity, and for me as well, can you give me rough idea of the weight of this lens? Seems to be a 2-pounder, from the looks of it.

  9. #9

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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    730 grams with flange, no caps

  10. #10
    Unwitting Thread Killer Ari's Avatar
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    Re: 21 1/4 Inch f/11 Kodak Copying Ektanon Lens Board size

    Cheers, Randy.
    Shouldn't be a problem for a Technika board, even if the lens is threaded directly to the board.

    I just realized this thread should be in the ULF section. Thanks, all.

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