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Zenza Bronica

Technical Documents (pdf format)

How the Seiko #0 shutter works: Anatomy of Seiko #0 shutter used on ZENZANON lenses

Evolution of Zenzanon lenses: From Zenzanon S to PS lenses

Polaroid backs: Bronica SQ Polaroid Backs

Focusing distance (new): Extension tubes and close-up lenses

The tiny screws used on Zenzanon lenses: JCIS #0 Screws

Repair Tips (pdf format)

Dismount a Zenzanon S lens: Disassembly a ZENZANON 150/3.5 S Lens

Dismount a Zenzanon PS lens: Disassembly a ZENZANON 150/4 PS Lens

Save a Zenzanon S lens: Bring a sloppy ZENZANON lens back to life

Check Seiko #0 shutters (updated): Measure Seiko #0 shutter times

Adjust shutter times (new): The right times



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