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Thread: Can one "half stop" the shutter?

  1. #1
    Rio Oso shooter
    Join Date
    May 2006
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    203

    Can one "half stop" the shutter?

    I have been reading a while and have yet to find, by search or by luck, the answer to the following question? Can one "half stop" the shutter. I would think that you could because it is mechanically done but I am not sure.

    Thanks,
    Riooso
    Last edited by riooso; 19-Jul-2006 at 20:40.

  2. #2

    Re: Can one "half stop" the shutter?

    Riooso,

    You can set Ilex shutters between full stops, some Wollensak shutter (not Rapax). You might try it with older Compound and Dial set Compurs. Most other shutter don't allow for that.

  3. #3
    Doug Dolde
    Guest

    Re: Can one "half stop" the shutter?

    My Copals have 1/3 settings.

  4. #4
    tim atherton's Avatar
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    Jul 1998
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    3,692

    Re: Can one "half stop" the shutter?

    do you mean speed or aperture..?
    You'd be amazed how small the demand is for pictures of trees... - Fred Astaire to Audrey Hepburn

    www.photo-muse.blogspot.com blog

  5. #5

    Join Date
    Dec 1997
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    Baraboo, Wisconsin
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    7,695

    Re: Can one "half stop" the shutter?

    It may vary with shutter type but on every LF shutter I've owned (mostly Copals) I could set the shutter in between marked speeds. But usually if I want an "in between" stop I'd do it with the aperture since apertures are marked for half or third stops and shutters aren't (at least mine aren't).
    Brian Ellis
    Before you criticize someone, walk a mile in their shoes. That way when you do criticize them you'll be
    a mile away and you'll have their shoes.

  6. #6
    Rio Oso shooter
    Join Date
    May 2006
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    203

    Re: Can one "half stop" the shutter?

    I am sorry, I thought it would be a yes, or no answer. If I am wide open and want a half stop it would be nice to just pick it up with the shutter speed. Forgive me, I am new at this. I know the apature is a geared affair that makes the hole bigger and smaller and is continuous. Speed is linear and the apature is not. I am trying to find all the in and outs of all this.

    Thanks,
    Riooso

  7. #7

    Join Date
    Oct 2000
    Location
    Berkeley CA
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    153

    Re: Can one "half stop" the shutter?

    The shutter speed ring has a slot cut into it that moves the speed mechanism lever, a sort of cam. On an Ilex, the cam is a smooth curve. On most shutters, the cam is a series of steps, much like the edge of a key. So to set in between speeds, there is no problem on the Ilex. But on most shutters, you have to set it part way up the ramp between steps. You can't see what you are doing with the shutter assembled, so it would be hit or miss.

  8. #8
    tim atherton's Avatar
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    Jul 1998
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    Re: Can one "half stop" the shutter?

    And on Copal shutters there is one spot (I forget where it is - between 1/15 and 1/30 or something like that (maybe 1/8 and 1/15...) where it defaults to 1second or something like that. In fact this can happen if you don't actually set the shutter speed ring accurately to the marked speed and it is off just slightly. Unless you notice the longer noise, you don't realise until you find your film is overexposed....

    Don't recall if this is so on all copal sizes either
    You'd be amazed how small the demand is for pictures of trees... - Fred Astaire to Audrey Hepburn

    www.photo-muse.blogspot.com blog

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