Bronica's updated ETR system body — the ETRSi with improved metering and controls.
The Bronica ETRSi is the final and most refined body in the Bronica ETR 645 medium format system — improving metering and ergonomics over the ETRS. It uses 6x4.5cm film with interchangeable Zenzanon lenses.
The ETRSi improved metering with TTL flash and OTF (Off The Film) metering over the ETRS. Same interchangeable Zenzanon lenses, viewfinders, and film backs. 645 format — 15 frames on 120 film. Leaf shutters in lenses.
Bronica ETR mount. 645 medium format. Improved metering over ETRS. Same interchangeable system — lenses, backs, viewfinders. The final ETR body — Bronica was later discontinued.
Available used at budget to mid-range prices. The ETRSi is the most refined ETR body — preferred over the ETRS for improved metering. Bronica is discontinued but the system remains functional. For affordable medium format film photography.