Question about Bronica SQ-Ai Medium Format Camera

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Bronica SQ-Ai shutter problem

I just bought a used Bronica SQ-Ai with an 80mm S lens. The batteries are new and light up the led. When I take a picture, however, the shutter does not fire at the selected speed--I guess it is firing at the default speed of 1/500th (although it seems slower). The led indicates the correct speed -- the light goes on after 4 econds, 1/4 sec, etc., but the shutter is not firing at the selected speed. Is this a problem with the camera or the lens? Any fixes? I cleaned the contacts. Thanks

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  • Dennis Reeder Jun 07, 2007

    The problem was a defective shutter in the lens. Thanks for your feedback!

  • Anonymous Apr 09, 2009

    bout a month ago I bought Bronica SQ from Adorama Used Dept.
    Since then, I've shot  8 rolls and got dissapointed with the results:


    After ~15 minute of inactivity shutter stops to behave according to my adjustements.
    I've made several test shots with the the exposure set according to the exponometer. Moreover, in order to cross-check my adjustements I shot same composition with my digital SLR. 
    As a result, my DSLR shots were brilliant and Medium shot appeared to be almost black (too dark). The medium films were developed in different photo studios to exclude the film development mistake.




    As a result of in-depth observation, shutter starts to misbehave after 15-20 minutes standby mode. Then after 8-9 test shots it  "wakes-up" and starts to


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There could be a number of issues with this problem. Make sure the contacts at the rear of the lens and those on the body that connect with those on the lens are clean and straight. If so, the problem may be in the shutter within the lens. There is a magnet inside the shutter that sometimes becomes contaminated and fails to hold the shutter blades open for the selected shutter speed. The face of the magnet may need to be cleaned. There are also timing switches that sometimes go bad or need adjusting. These internal problems need to be taken care of by a competent technician since the lens needs to be completely disassembled. I have also seen these shutters go bad and need to be replaced. Let's hope that's not the problem because it will be difficult to get a new shutter for the lens--but not imposible. God luck.

Posted on May 01, 2007

  • Steve Kew May 01, 2007

    I'm sorry for the last line of my post. I meant to type "Good luck". No offense intended. Thanks.

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