ZEISS IKON Tenax automatic

 ZEISS IKON-Tenax.JPG

35mm camera with automatic exposure control

Manufacturer: Zeiss Ikon, Stuttgart

Production period: 1960 ... 1962

Lens: Zeiss Tessar 2,8 / 50mm

Diaphragm: 2,8 ... 22

Shutter: Prontormat-S  1/30 ... 1/300 sec and B

The trend of automatic exposure control started in 1959 with the Agfa Optima. Other manufacturers followed, here is the example presented by Zeiss Ikon. All these solutions were based on a selenium photo cell and very clever mechanics. No batteries were required.

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