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Thread: Advantages of Sinar Shutter f4 v f5.6

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  1. #1

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    Advantages of Sinar Shutter f4 v f5.6

    I'm about to buy a Sinar Shutter for my Horseman which is on a plane somewhere over the Pacific hopefully avoiding any cyclones. Is there any substantial benefit in the f4 over the f5.6?

    I have two barrel lenses, Dynar 180mm & Ross Xpress 305mm, but may get others later to use for still life and protraits.

    Any thoughts.

  2. #2

    Re: Advantages of Sinar Shutter f4 v f5.6

    The f4 version allows you to use f4 or faster DB mounted lenses like a 90mm f4.5 at full aperture. It offers no advantage for barrel lenses as the opening is the same size as the f5.6 version.

  3. #3

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    Re: Advantages of Sinar Shutter f4 v f5.6

    Thanks Jason, excuse my ignorance, DB mounted lenses, I believe they are Sinar but what does DB stand for?

  4. #4
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    Re: Advantages of Sinar Shutter f4 v f5.6

    Sinar DB lens only has aperture but without shutter & aperture control. So it needs Sinar Auto shutter.
    Your barrel lenses just need the shutter function of Sinar Auto shutter. Don't care of F4 or F5.6, please. F5.6's may be cheaper.
    Sometimes love just ain't enough.
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  5. #5

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    Re: Advantages of Sinar Shutter f4 v f5.6

    The f4 Sinar shutters tend to sell for a bit more even when they are basically the same as the f5.6 shutter. The f4 indicator shutters are less common than the f5.6.
    The indicator is different for f4 Sinar DB lenses. If you're using this shutter with barrel lenses, there is no functional difference.


    Bernice

    Quote Originally Posted by Colin D View Post
    I'm about to buy a Sinar Shutter for my Horseman which is on a plane somewhere over the Pacific hopefully avoiding any cyclones. Is there any substantial benefit in the f4 over the f5.6?

    I have two barrel lenses, Dynar 180mm & Ross Xpress 305mm, but may get others later to use for still life and protraits.

    Any thoughts.

  6. #6

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    Re: Advantages of Sinar Shutter f4 v f5.6

    I believe that DB is an abbreviation for the German word "Druckblende" - meaning in this context something like "shutter and aperture unit".......

  7. #7

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    Re: Advantages of Sinar Shutter f4 v f5.6

    for the German word "Druckblende" - meaning in this context something like "shutter and aperture unit".......
    It means just the f - stop mechanismen and in german it is as you stated Druckblende which would sound pressure f- stop
    If its a DBM the M stands for manual because there are lenses which go up to f 64 but the sinar shutter control only goes up to 45 so for f 64 you have to take it by the lens ring up to f 64.

    Cheers Armin

  8. #8

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    Re: Advantages of Sinar Shutter f4 v f5.6

    The sinar/copal shutter is a brilliant solution for being able to use character barrel lenses.

    You might look for the older "green" type - made for the Norma model - which is minus the side aperture adjustment device which just adds extra weight.
    They are super on tailboard type cameras too, where the front standard and end bellows can be fixed up with fixing devices.

  9. #9

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    Re: Advantages of Sinar Shutter f4 v f5.6

    What cameras can the Sinar Shutters be mounted on? I always assumed it was just Sinars, but it sounds like Horseman as well?

  10. #10

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    Re: Advantages of Sinar Shutter f4 v f5.6

    Quote Originally Posted by Larry Gebhardt View Post
    What cameras can the Sinar Shutters be mounted on? I always assumed it was just Sinars, but it sounds like Horseman as well?
    With an appropriate adaptor, I expect any camera could have a Sinar shutter mounted.

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