Hasselblad 503cx-shutters in two phases

Discussion in 'Medium Format Cameras and Accessories' started by la.triglia, Jul 25, 2010.

  1. la.triglia

    la.triglia Member

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    Dear Hassy-lovers,

    Today pushing for a shot my 503cx, instead to get a simultaneous shutters action, the shot was operating in two phases and I had to press again the shutter to complete. What is going to happen? What I have to do? Thanks in advance.
    Ciao, Aldo
     
  2. Q.G.

    Q.G. Inactive

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    Can you describe in detail what happened, in what order?

    But a blind guess, or rather hint: there are two shutters in a Hasselblad.
    The one in the lens is timed, and only requires you pressing the release button.
    The auxillary shutter in the rear (the thing that shields the film from light when the shutter in the lens is open so you can focus and compose) is timed by your finger pressing the release button.
    When you press the button, both shutters open. The shutter in the lens will close after the timer in the lens has finished what it does. The one in the rear slams shut the moment you take the finger off the release button.
    Those two events, both shutters closing independently from each other, may be what you noticed.
     
  3. Ed Sukach

    Ed Sukach Member

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    Does this happen at ALL shutter speeds?
     
  4. pgomena

    pgomena Member

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    Only on the ones where you forget to hold the shutter button down.:wink: I forget exactly where it becomes a concern. Maybe 1/8 second and slower?

    Peter gomena
     
  5. raoul

    raoul Member

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    Some speeds require the shutter to be held down. But that is dependent on the lens. How slow was the shot?
     
  6. Ed Sukach

    Ed Sukach Member

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    ??? Which lens does not require the shutter release to be held down?

    I thought that the "back curtains" were activated by the body mechanism, independent of the lens shutter.
     
  7. bdial

    bdial Subscriber

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    The number in the book is 1/15, it kind of depends on how fast your finger is, though 1/15 sec may be how fast the mechanism can cycle. Which lens is mounted doesn't matter.
     
  8. wclark5179

    wclark5179 Member

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    Hi!

    For most of my cameras, when triggering the shutter with my finner, I have always held the shutter button "in" "down" depending where it's located until the cycle is complete. Even the Rolleiflex cameras I do the same. Does it prevent jerky motion? I think it does, at least to me it does. Perhaps I'm wrong but my thinking is that one movement, pressing to trigger the shutter, helps prevent slight movement as compared to press to trigger and immediately release where if you have a fast finger then there could possibly be movement when releasing it.

    Maybe I'm full of hot air but it's what I have done for many years. At least a million of them!

    Your thoughts?
     
  9. Q.G.

    Q.G. Inactive

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    My thoughts?

    You're not full of hot air.

    But the question is how fast your finger are, i.e. whether it is possible at all to remove your finger from the release button before the shutter has finished doing its job at 1/1000.
    1/500?
    1/30?
    :wink:
     
  10. Q.G.

    Q.G. Inactive

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    Aldo,

    Can you describe what happens?
    We're just guessing here, and what we are saying is perhaps way off the mark.
     
  11. wclark5179

    wclark5179 Member

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    Q.G.

    You are correct. Probably not for faster shutter speeds. Thanks for your thoughts.

    However, for me, I do it all the time otherwise I'd forget every so often to remember to keep my finger in place at the slower shutter speeds!

    Have a wonderful week!
     
  12. Q.G.

    Q.G. Inactive

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    Bill, i do too.
    Not so that i don't forget whe it is needed. But for the reason you already mentioned: if you move quickly, you're more likely to shake the camera.
     
  13. fdisilvestro

    fdisilvestro Member

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    About OP, Just my guess,
    May it be that the first time the shutter release is pressed, the camera is acting like the pre-release was pressed? I mean lens shutter closed, auxiliary shutter open, and then the second time the release is pressed the lens shutter works. Maybe the camera needs a CLA
     
  14. la.triglia

    la.triglia Member

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    Dear friends,

    First of all I apologize for not having already replied.
    When I had this drawback, I was still on holiday in Sardinia living in a small village without internet availability. That evening, I was so bad temperament to drive for a while to find a Wi-Fi point and write to APUG.
    Thanks very much for your posts where there are some questions to be analyzed quickly.
    I have been requested to describe in detail what happened and in what order:
    1. After I pressed the release button, I had the clear impression that it went to stop itself at half of the usual trip, I heard only the deep sound of one shutter and I retain that one from the central body.
    2. To go over the block I had to stop the pressure and to push again, hearing this time the second classic sound from the lens.
    3. This occurred modifying both the aperture and the speediness from one second to 1/500, till the end of the film(400 ASA).

    4. I had also the impression (… impression because I was nervous with my hands trembling) that the camera was blocked while I was sure that some shots were regular before to return irregular.

    5. This camera was unutilized for more than one month remaining cocked.
    6. Concluding with another remark, this time I did not utilize the flexible cable release button I usually do with Hassy.

    I hope to have encouraged you to write down others precious experienced opinions.
    Especial thanks to all of you.
     
  15. Q.G.

    Q.G. Inactive

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    Doesn't sound good, i'm afraid.

    Keeping the camera for a month unused is not a problem.
    But whatever caused this, it sure does sound like there is something that needs putting right inside the body. Probably not a difficult repair, but it has to be done by someone who knows his way in the inside of the camera. And it probably will not be cheap.
    Sorry!
     
  16. la.triglia

    la.triglia Member

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    Thanks Q.G.. Tomorrow I will test again my camera and after I will contact my supplier’s lab. I will keep you informed about the technical solution ... probably in a month from now. Thanks again
     
  17. Sirius Glass

    Sirius Glass Subscriber

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    Get the camera checked out. It probably needs a clean, lub and adjust [CLA].

    Hasselblad recommends that the lenses be stored cocked. They were designed for that. Furthermore, if the lens and camera are cocked the lens can be removed. Removing and uncocked lens from a camera is bad to the lens and camera - damage can occur.

    Steve
     
  18. la.triglia

    la.triglia Member

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    Dear Friends

    Today I have done a new test on my camera and I think to have understood why of the slowdown of the shot. The inconstant jam was caused by the overturning mirror. A side of the mirror rubbed the inner side (that one in correspondence of the release button) collecting in time dirt on the contact side. I have cleaned both the surfaces and now it seems running properly. I do not know if the mechanism has suffered a damage on overturning speediness of the mirror.
    I hope my English was sufficiently clear.
    Thanks again for your kind support.
     
  19. Q.G.

    Q.G. Inactive

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    Hi Aldo,

    Your English is perfectly understandable.
    Glad to hear that the problem is fixed, but i would have the camera checked sometime soon anyway, since unless something is misadjusted, the mirror should not rub anything.
    And even if it was dirt stuck between mirror and wall that caused the rubbing, i.e. the mirror itself did not make contact with the wall, it could be that it now is out of aligment.

    But try it first. If you don't notice any problem with focus, it's not something that needs immediate attention. But i would have it checked sometime soon anyway.