Disassembly of Kodak Enlarging Ektar - feasible?

Discussion in 'Kodak' started by Stephan Goldstein, Jun 28, 2006.

  1. I just got hold of a 90mm f/4.5 Enlarging Ektar with a bit of internal
    dust, a few flakes of something on the edges of two aperture blades,
    and maybe the beginning of a bit of fungus at the edges. Is it
    feasible for me to attemp to disassemble and clean it? I would
    define feasible as not requiring tricky spacing for reassembly.




    My posting email address is invalid. Try sgold atsign alum mit edu
    but don't forget to put in some dots in the obvious places.
    Stephan Goldstein, Jun 28, 2006
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  2. Stephan Goldstein

    Mike Guest

    I'm not familiar with an Ektar, but I dissassemble my lenses all the time.
    All you need is a simple spanner wrench. I have yet to meet a lens where
    "tricky spacing" was required. Everything just fits together.

    I did, on my most recent dissassembly, botch the reassembly by not
    properly seating an element. I noticed, and then corrected the problem.
    Mike, Jun 28, 2006
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  3. The 90mm Enarging Ektar is a new one to me. I am familiar
    with a 100mm E.Ektar. If its this lens its a four element
    air spaced type. The outside elements are held in place by
    retaining rings.
    The cells unscrew from the barrel. The rear one has a
    flat surface at the back of the barrel. It can be gripped by
    a stick rubber surface like a latex glove layed flat or a
    rubber jar opener (I can't find these any more). The front
    cell is a little more complicated. Its front looks like a
    retaining ring and is the part with the Kodak label on it.
    This can be gripped with a friction wrench made of a tube
    the right diameter with sticky rubber on the end.
    The outside elements of each cell are held in place by
    more retaining rings. These can be seen inside the outside
    facing openings of each cell, just around the glass. These
    are also removed by using a friction wrench. You will have
    to make the wrenches to fit the rings so that they do not
    touch the glass. The tubes can be metal or whatever will
    fit. One can make the gripping surface from liquid latex or
    from O rings cemented to the tube. I've not had much luck
    with O rings.
    If this is some other version of the Enlarging Ektar
    write back. AFAIK they were made in focal lengths of 50mm,
    75mm, and 100mm, but there may have been others.
    Richard Knoppow, Jun 29, 2006
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