Medium format macro lens for Bronica ETR system cameras.
The Bronica Zenzanon-E 100mm f/4 Macro is a macro lens for the Bronica ETR medium format system (6×4.5cm), providing 1:1 reproduction capability with the ETR's integrated leaf shutter system. The 100mm on 6×4.5cm gives approximately 63mm full-frame equivalent at standard focus distances.
100mm focal length, f/4 maximum aperture, 1:1 macro capability, Bronica ETR bayonet mount with integrated leaf shutter, 6×4.5cm medium format coverage.
A 1:1 macro on medium format 6×4.5cm provides exceptionally large image capture of small subjects, well beyond what's achievable with 35mm macro lenses at equivalent reproduction. The integrated leaf shutter enables fill-flash at all macro reproduction ratios. Used for scientific, product, and nature macro photography requiring the maximum resolution.
Verify integrated leaf shutter at all speeds. Test 1:1 macro accuracy. Inspect elements for fungus, haze, and coating condition. Confirm Bronica ETR bayonet engagement. Test with flash synchronisation in macro mode.