mft custom made helicoids for lens conversions?

Discussion in 'Adapted Lenses' started by kds315, Apr 12, 2010.

  1. kds315

    kds315 Mu-43 Regular

    149
    Apr 6, 2010
    Weinheim, Germany
    Some weeks ago I started a similar thread in another forum to make available custom made helicoids for easier lens conversions, which turned out positive.

    Now I wondered if others here might be interested in such helicoids for mft cameras to easily adapt their manual lenses to? I would be willing to organize such a bulk order, as ususally 10-20 each have to be ordered before such a custom order will be accepted by manufacturers.

    Available sizes as per today are:
    a) short: approx. 13.5 - 20.5mm extension
    b) middle: approx. 20.5 - 41.5mm extension
    c) long: approx. 30.5 - 50.5mm extension
    d) extra long: approx. 35.5 - 90.0mm extension

    matte black or silver finish (if quantities are reached).

    PM me or reply here to see if there would be some interest in that.

    Estimated prices depend massively on the quantities we reach, I expect EUR80-100 each, but this can only be set after negotiations with the manufacturer(s).

    This is how the custom made helicoids look like from that other project to have an idea about the quality to expect (bajonet rear mount, M42 front thread mount to attach any lens with suitable intermediate ring)
     

    Attached Files:

  2. kds315

    kds315 Mu-43 Regular

    149
    Apr 6, 2010
    Weinheim, Germany
    Here my 90 seconds "conversion" of an older fine Schneider Xenon 2/40mm using such a helicoid (my working prototype). [the chrome part is an adapter ring I used between lens and helicoid]

    Pics show the helicoid compressed and fully extended, it is type a). The helicoid front does not rotate, a big plus as it allows to arrange the lens markings upside (not yet done here).
     

    Attached Files:

  3. ph.

    ph. Mu-43 Rookie

    21
    Feb 14, 2010
    norway
    I sign up for a short one. With a m43 to m39 ring, one can adapt enlarging lenses as extremely good macro lenses.

    p.
     
  4. kds315

    kds315 Mu-43 Regular

    149
    Apr 6, 2010
    Weinheim, Germany
    Thanks; there hasn't been interest here, so send me your email address and I see if I can get one for you.