B&L Automatic Shutter
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Bausch & Lomb Automat image by SBA73 (Image rights) |
Bausch & Lomb's Automatic shutter was still one with pneumatic controls, with one cylinder to connect a bulb's flexible tube, the other to regulate speed. It included a diaphragm and a shutter release lever. It fitted two-part screw-mount lens kits.
image by Mario Groleau (Image rights) |