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  1. #1

    Join Date
    Jul 2008
    Shooter
    Med. Format RF
    Posts
    259

    remounting a koni omega 58 mm lens

    Is there a copal/other brand that I can use

  2. #2

    Join Date
    Mar 2005
    Shooter
    Multi Format
    Posts
    3,293
    The cells are direct fits in a Compur/Copal/Seiko #0 shutter. In K-O mount they're in a Copal #0 modified to be fired from the body and cocked by the body.

    They will not fit in a press (self-cocking) shutter, the inner element of the rear cell will hit the diaphragm. Don't waste your money on a press shutter, get a proper cock-and-shoot shutter.

    If you go ahead, you'll need to have the shutter scaled for the lens.

    I've done all this with a Koni/Rapid Omega 60/5.6. Wanted a 58, but a 60 turned up at an amazing price.

    The 60 just covers 2x3, absolutely won't do for 6x12. I doubt the 58 has more coverage. It doesn't have to and like the 60 it has a relatively small last element.

  3. #3

    Join Date
    Jul 2008
    Shooter
    Med. Format RF
    Posts
    259
    Thanks. I was under the assumption that the 58 and 60 were the same lens.

  4. #4

    Join Date
    Mar 2005
    Shooter
    Multi Format
    Posts
    3,293
    They are absolutely positively not the same lens. The 60 is an older design, has the f/8 Super Angulon layout (six elements in four groups). The 58 is a newer design, has the f/5.6 Super Angulon layout (eight elements in four groups).

    See http://www.rangefinderforum.com/foru...ad.php?t=63826



 

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