The development of the 35-mm or candid camera by Oskar Barnack of the Ernst Leitz company.
According to "The Development
of 35mm Photography"
An early 35mm still camera was the Tourist Multiple from 1914 with standard 35mm film for 750 exposures that utilized the 18x24mm so-called half frame like 35mm motion picture cameras did. Several cameras that were adapted from motion picture photography for still use were also created around the same time. However, the prototype Ur-Leica (invented by Oskar Barnack while working for Ernst Leitz) from 1913 used the standard 24x36mm image size on standard, 35mm film. It was different and it lead to a revolution in camera design.
As early as 1905, he had the idea of reducing the format of negatives and then enlarging the photographs after they had been exposed. As development manager at Leica, he was able to put his theory into practice. He took an instrument for taking exposure samples for cinema film and turned it into the world's first 35 mm camera: the 'Ur-Leica'.
History of Leica
The history of Leica - a summary of the most important milestones.
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