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Thread: Osaka Commercial 360mm f/6.8 info

  1. #21

    Join Date
    Feb 2001
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    Re: Osaka Commercial 360mm f/6.8 info

    Quote Originally Posted by andrewch59 View Post
    Thom, I was wondering what shutter you use with the congo? Seems the large copal 3 shutter I purchased for this lens does not fit (too small), I have no other options
    You may have a Copal 3S shutter, not the Copal 3 that the Commercial Congo 360mm f/6.8 lens needs. Confusingly, some 3S shutters are marked 3. The 3S has 56mm threads, the 3 has 58mm threads.

    Kumar

  2. #22

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    Re: Osaka Commercial 360mm f/6.8 info

    Yes, Copal 3S for mine. But indeed it just says "Copal 3."

  3. #23
    New Orleans, LA
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    Oct 2004
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    487

    Re: Osaka Commercial 360mm f/6.8 info

    Quote Originally Posted by andrewch59 View Post
    Thom, I was wondering what shutter you use with the congo? Seems the large copal 3 shutter I purchased for this lens does not fit (too small), I have no other options
    I believe it is a Copal 3S but it is marked Copal 3.

  4. #24

    Join Date
    Jul 2013
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    Queensland, Australia
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    Re: Osaka Commercial 360mm f/6.8 info

    Err no! From advice I received on this thread I tried a copal 3s, too small, so I purchased a copal 3, still too small. Unless of course there are three different sized copal 3?? Perhaps I'm just climbing the ladder
    Last edited by andrewch59; 21-Sep-2017 at 18:09. Reason: more info

  5. #25

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    Re: Osaka Commercial 360mm f/6.8 info

    That's it for Copal 3 shutters. Perhaps it's time for a Packard shutter behind the lens. Just leave it in the barrel.

  6. #26

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    Re: Osaka Commercial 360mm f/6.8 info

    I got my information here: http://www.jck.net/congo/frame_e.htm which says you need a Copal #3 shutter. There are only two Copal 3 sizes - 3 and 3S, of which the latter is confusingly named 3 occasionally. Iif you could measure the lens cell threads it would help.

    Kumar

  7. #27

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    Jul 2013
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    Queensland, Australia
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    Re: Osaka Commercial 360mm f/6.8 info

    Hi Kumar, Yes you can see the difference In size between the two I have, both a copal 3s (marked as copal 3) and a copal 3 which is I believe is 2 mil larger thread and 2.4 mil thicker? I have made a shutter out of a speed graphic cut in half, my go to shutter for larger lenses, takes everything including a 16 inch ross portrait petzval. It accepts a deardorff lens board.

  8. #28

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    Re: Osaka Commercial 360mm f/6.8 info

    Andrew, what I meant was that if you can tell us the measurements of the lens cells, someone here would probably know in which shutter they would fit.

    Kumar

  9. #29

    Join Date
    May 2010
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    St. Louis, Mo.
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    Re: Osaka Commercial 360mm f/6.8 info

    My Osaka Commercial 360mm lens is in a shutter clearly marked Copal - No. 3s.

    I don't know why Copal didn't mark all their 3s shutters. It's a bit silly and confusing.

  10. #30

    Join Date
    Dec 1999
    Location
    Forest Grove, Ore.
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    3,318

    Re: Osaka Commercial 360mm f/6.8 info

    Quote Originally Posted by Thom Bennett View Post
    Neil, I can confirm that the 360mm takes 67mm filters. That's one reason I got it for the 8x10. Most of my other lenses use 67mm filters.
    Thanks for the clarification. As I indicated in my original post, that's really interesting.

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