The Zenith EM is identical in specification to the TTL model, except for the metering system — a sensitive selenium cell (powered by light itself — no batteries required) provides exposure readout on the camera's top plate. Complete with ever-ready case and neckstrap.
Standard lens: 58mm Heliod 44M, 6-element. Accepts 52mm screwmount filters. Apertures: f/2-f/16. Focusing: 0.5m-inf. Shutter Speeds: 1/30th-1/500th + 'B'. Bulb and electronic flash synchronises, delayed action. Built-in Light Meter: Selenium cell, calibrated 16-500 ASA/13-28DIN.