Bronica SQ-A Lens Release Mechanism

Discussion in 'Medium Format Cameras and Accessories' started by agour, Mar 1, 2011.

  1. agour

    agour Member

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    Mar 1, 2011
    Shooter:
    35mm
    Hey,

    Just got an SQ-A body, bought it for really cheap after I was told the guy had problems removing the lens sometimes.

    Anyway, i have looked at the mechanism, and as far as I can tell it seems ok. Once the mirror is down, I press the lens release button and it movies a little catch through around 20 degress.
    As far as I can tell, this would move the shutter release latch on the rear of the camera. Am I missing something, or is this latch all their is to the removal of the lens?

    Thanks,
    Paul
     
  2. r-brian

    r-brian Member

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    Feb 25, 2003
    Location:
    Albuquerque,
    To remove the lens the body and lens has to be cocked, if not it won't release. I owned a SQa for 13 years and never had a problem. Bought a second back-up body and couldn't get the lens off the first time I mounted it. That's when I found out it needed to be cocked. You would have thought in 13 years it would have happened before, but it didn't.
     
  3. agour

    agour Member

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    Mar 1, 2011
    Shooter:
    35mm
    Spent more time looking at it, I was 99% sure I knew how the mechanism worked, so went for it and screwed it on.

    Tried taking it off again..


    ... worked first time! Tried it a few more times, and had no problems!
    £15 body, looks like a bargain.

    I also tried timing the shutter speeds, but it the shutter didnt appear to fire. I reattached the lens, then it worked everytime. Il just put it down to dirty contacts on the lens, cant imagine what else it could be.
     
  4. David_A

    David_A Member

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    May 13, 2009
    Shooter:
    Medium Format
    The shutters on these cameras are in the lenses themselves, if you want to find out if the shutter fires at different speeds then do the following.
    Set the camera to multiple exposure
    Take the film back off and look through from the back as you press the shutter release, you should see the aperture alter as well as the shutter open and close. Alter both the speed and aperture to check both are doing what they should be doing.

    David
     
  5. film_man

    film_man Member

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    Dec 17, 2009
    Location:
    London
    Shooter:
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    I had a 150S that would sometimes lockup. You'd have to wiggle it a bit and then it would fire. Sometimes it would fire all the time, other times it would get stuck if you shaked the camera or something like that. I also had a 75PE (for ETRS) that would basically misfire if the camera was pointed at anything but level!

    It could be this guy didn't realise the shutter was stuck, thus couldn't remove the lens...?
     
  6. agour

    agour Member

    Messages:
    3
    Joined:
    Mar 1, 2011
    Shooter:
    35mm
    I thought this could be a possibility, but who knows! I figured out how to manipulate the release mechanism through taking off the front panel, so should be ok if it ever decides to stop working.

    David, I already checked the aperture by putting it onto 4 second exposures, and dry shooting it (with back etc on). Thanks for the tip anyway!