Leica I Launches at the Leipzig Spring Fair

Eleven years after Barnack's prototype, Ernst Leitz II took a calculated risk. He ordered production of 1,000 cameras — a large investment — and unveiled the Leica I at the Leipzig Spring Trade Fair in March 1925. The reception was cautious at first; professional photographers were sceptical that a tiny negative could rival large-format quality. They were wrong.

Within a few years the Leica I was selling across Europe and North America. Its Elmar 50mm f/3.5 lens, designed by Max Berek, was sharp enough that enlargements convinced even the sceptics. The camera opened photography to a new class of user: journalists, travellers, scientists, and amateurs who could not carry a large studio camera.

The Leipzig launch marks the moment Barnack's private experiment became a product that reshaped the world. The 35mm format the Leica I established would remain photography's dominant standard for the rest of the twentieth century.