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Thread: Plexi rod on lens board

  1. #1

    Join Date
    Feb 2014
    Posts
    8

    Plexi rod on lens board

    Hi, maybe someone can figure this out-

    I have recently acquired a collection of large format stuff, including an Orbit Monorail. It has a 4x4 lens board. Also with the package, there are 3 lenses with 4x4 boards, looks like they were custom built. Nice job of machining, but I am puzzled by 2 of them having a 1/4" plexi rod sticking forward from the board. It has a diagonal cut across the end. This penetrates the board, and has a red filter on the inside (camera side) of the board. Both lenses are S K Componars, (1) 4.5 105, (2) 3.5 50. There is a 3rd custom lens with the camera, a Kodak Anastigmat 4.5 161 projector lens that has been mounted on a board, but does not have the added plexi rod light path thingy.


    Any clues, anyone?


    This package that I have bought is a classic case of a lifetime collection, the death of the owner, and all of his gags and special projects, half-completed modifications, etc, left to be deciphered. I'm actually doing pretty well, figuring what goes with what, but is taking a lot of time!

  2. #2

    Join Date
    Feb 2007
    Location
    Grand Junction,CO
    Posts
    985

    Re: Plexi rod on lens board

    Sounds like enlarger lens boards and the plexiglass lets light through to read the aperture in the dark

  3. #3

    Join Date
    Feb 2014
    Posts
    8

    Re: Plexi rod on lens board

    Could be, could be. Just a coincidence that the board is exactly the right size to fit the Orbit?

  4. #4

    Join Date
    Oct 2013
    Location
    Bow, NH
    Posts
    1,271

    Re: Plexi rod on lens board

    Quote Originally Posted by Erik Larsen View Post
    Sounds like enlarger lens boards and the plexiglass lets light through to read the aperture in the dark
    Exactly right!

  5. #5

    Join Date
    Aug 2000
    Location
    California
    Posts
    3,228

    Re: Plexi rod on lens board

    They are Beseler boards.

  6. #6

    Join Date
    Feb 2014
    Posts
    8

    Re: Plexi rod on lens board

    Thanks for your help.

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