Re: Vintage film cameras
I would say it is quite straightforward, but here goes. The selenium cell powers the meter, if the reading is too low then when the aperture trap bar comes up (part of the shutter button press) and the needle is to the right when looking at the camera, it falls into a recess which brings the red flag up locking the shutter. If the reading is good and the needle is far enough away from the lock zone, then the appropriate aperture is selected. This one has a two stage trap bar that also selects one of two shutter speeds. All is fine until that screw is fitted. Infuriating! I also picked up a Jupiter 8m which needed a good clean, also listed as having haze. I stripped it down and have found that inner element is suffering from seperation. The Red Cross charity shop next town over has some film dev gear, going to shoot over and take a look.
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