Question about Bronica SQ-Ai Medium Format Camera

1 Answer

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

Posted by Dennis Reeder on

  • 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



1 Answer

Steve Kew

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers

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.



Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Shutter will not cock

Hi there

I have researched your problem. I have located the online version of your camera and attached the link here:

It seems like the following cause might fit your symptom:

Is it possible that the small lever on the side might be set to multiple exposures. (See number 22 on the online manual that I sent the link for!)

Good Luck! and let us know how this works.

Jan 04, 2008 | Bronica SQ-Ai Medium Format Camera

2 Answers

Zenzanon 80

The lens does not have a shutter - that's in the camera body. The lens contains the aperture or f stop adjustment. It is done by injecting or retracting blades in the light stream of the lens barrel between the front and rear optics. Check the aperture blades to see if they move easily and open equally by varying the f-stop ring on the lens while looking through it. If not moving all the blades the same amount or it does not continue to restrict the opening as you increase the f-stop value, there's something wrong with the lens.

Are you sure you haven't accidentally activated any exposure compensation adjustment on the camera body?

Jan 10, 2012 | Bronica 80mm f/2.8 Zenzanon-PS Lens

1 Answer

Non availability of LR 44X4 battery for etrsi

They are still easily available online.

Here's one supplier that I regularly use. Even if the supplier is no use to you, you'll see the many other model numbers for the same battery.

Aug 16, 2011 | Bronica SQ-Ai Medium Format Camera

1 Answer

Camera cocks but will not fire. New batteries

Is there film loaded? Bronica cameras feature an interlock that will prevent the camera from fully firin when not loaded, when no back attached, or when the dark slide is in the back. Some models have a small flip-switch that doubles as a double-exposure switch on the side that can be used to dummy fire the camera to test fire it.

If that doesn't work, consult a tech. The electronic's in these cameras go bad qute often these days.

Jun 15, 2011 | Bronica SQ-Ai Medium Format Camera

3 Answers

Shutter stays closed on bronica 645 etr medium format

Have the electronic shutter checked by a repair shop. Sounds like your Seiko electronic shutter has died or there's a short somewhere between shutter and lens. Hope this helps.

Jan 15, 2009 | Bronica ETR-Si Medium Format Camera

1 Answer

Bronica sq-b, mirror lock up lever was broken

Hi, I have the same problem - my lever plastic become broken in 2 days after I'vet body from KEH. Seems that iron topof the lever can be screwed in counter clockwize direction and after new one lever installed it can be screwed back and fixed with rubber cap.

But question to you - where did you get the replacement?

You can contact me on [email protected] at any time.


Dec 22, 2008 | Bronica SQ-Ai Medium Format Camera

1 Answer

Shutter not Cocking?

Try removing and re-attaching the lens. IIRC, the actual shutter mechanism is part of the lens assembly

Jun 19, 2017 | Bronica SQ-A Medium Format Camera

Not finding what you are looking for?
Bronica SQ-Ai Medium Format Camera Logo

Related Topics:

1,059 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bronica Photography Experts

Brad Brown

Level 3 Expert

18461 Answers


Level 3 Expert

85239 Answers

Tony Parsons
Tony Parsons

Level 3 Expert

6277 Answers

Are you a Bronica Photography Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides