Bronica's updated ETR system body — the ETRSi with improved metering and controls.
The Bronica ETRSi is a professional 6×4.5cm (645) medium format SLR camera from Zenza Bronica, the most refined version of the ETR series (ETR → ETRS → ETRSi), produced from approximately 1989. Modular design with interchangeable backs, viewfinders, and winders. Bronica ETR mount.
6×4.5cm (645) medium format (15 exposures on 120 film, 30 on 220). Bronica ETR interchangeable lens mount. Interchangeable film backs, viewfinders, and power winders. Electronically-controlled vertical focal-plane shutter. At approximately 1,150g with standard prism. Bronica ETR mount.
The ETRSi provides the broadest compatibility within the ETR accessory system, accepting all ETR-series backs, winders, and viewfinders. The modular back system allows quick film changes mid-roll. Bronica ETR lenses provide high-quality optics for medium format landscape, portrait, and commercial work.
On the used market the Bronica ETRSi is a professional 645 medium format SLR. Condition checks: shutter at all speeds, film back light-seal condition (foam seals degrade), viewfinder condition, lens mount coupling. Bronica ETR mount — proprietary. Verify all accessories and backs included.