bulb exposures on bronica SQ?

Discussion in 'Medium Format Cameras and Accessories' started by wildbill, Apr 9, 2007.

  1. wildbill

    wildbill Member

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    I've read that it's possible but is it only possible with some lenses?
    The shutter speed dial only goes up to 8 seconds. The sq-a model is what i'm asking about.

    vinny
     
    Last edited by a moderator: Apr 9, 2007
  2. papagene

    papagene Membership Council Council

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    If I remember my friend's SQa - the lens had a "T" setting for timed exposures. I am sure someone will fill in the blanks correctly on this question.

    gene
     
  3. glbeas

    glbeas Member

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    Theres a slide switch on the bottom of the lens barrel for switching the lens to bulb exposure. I haven't used it much so I'm not real sure how it's supposed to act.
     
  4. Sanjay Sen

    Sanjay Sen Member

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    Time (T) Exposure with the Bronica SQ-A

    I have a Bronica SQ-A and this is how the instruction manual describes time exposures with the SQ-A (quoted exactly as it appears):



    "Time exposures are made with the time exposure lever on the lens, regardless of the setting on the shutter speed scale. However, the lever is locked to prevent accidental movement and must be unlocked for use.


    A. Unscrew the set screw on the time exposure lever until further revolution is not possible, which will prevent the lever to be moved freely.

    * Except for time exposures, always shift the time exposure lever so that "A" is visible on the lens barrel and keep it locked with the setscrew to prevent accidental movement.

    B. Next, cock the shutter with the film winding crank and then shift the time exposure lever to the left (looking from the body towards the lens) which will expose a red-colored "T" on the barrel. The shutter will stay open when the shutter release button is depressed in this condition.
    The shutter is closed by shifting the time exposure lever in the opposite direction and exposing the letter "A" once more.
    "



    I hope this helps.

    I haven't used the time exposure function yet on this camera, partly because I think I will cause the camera to shake when I close the shutter by shifting the time exposure lever as described above. So far I've managed with the slowest shutter speed of 8 seconds.


    Best wishes,
    Sanjay
     
  5. mvettore

    mvettore Member

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    As the song says: you can leave your hat on, or a black cloth or simply the lens cap just before switching the A/T lever back. I suppose with times longer than 4 seconds, the risk to shake the camera is very odd.
    The Seiko #0 shutter is driven by an electromagnet drawing the battery all the time the shutter remains opened, if you set 8 seconds it draws current for 8 seconds quickly shorting the battery life, on the other hand using A/T lever the electromagnet doesnÂ’t draw any current.

    Max
     
  6. Bob F.

    Bob F. Member

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    Some lenses have a screw and some have a button you pull up, but in either case the action is the same as described above: it releases the slider so you can set it to "T". Silly method really, but as said, it stops the battery being depleted during long exposures. If you use it a lot (I don't) a small hood for the lens made out of black felt or similar might be a useful accessory to knock up...

    Cheers, Bob.