Contax - Dresden-built Contax SLR Models

Dresden-built Contax SLR Models

The loss of the Contax production tools at the Dresden factories turned out to be a blessing, as it made impossible the use of the existing toolings and parts. The new design chief Wilhelm Winzenberg was not involved in the camera side of Zeiss-Ikon, this also allowed a brand-new Contax design to be developed, to follow Hubert Nerwin's wartime plan to make a Contax SLR camera.

As the traditional vertical-run Contax shutter required considerable space both above and below the film gate for the drum rollers, the upper roller takes up the critical space required for the reflex housing mechanism, making it dimensionally impossible to use it for a satisfactory SLR camera. Winzenberg solved the problem by the use of a completely new horizontal-run focal-plane shutter, thus allowing space for the reflex housing.

While the 35 mm SLR camera had already appeared before the war, its major disadvantage was the waist-level finder which gave a laterally reversed image, taking away the immediacy between the photographer and his subject. In the Contax reflex, to be called the Contax S, a pentaprism was positioned directly above the focusing screen, which offered an eye-level, unreversed view of the viewfinder. This major technical advantage was critical in establishing the 35 mm SLR as the definitive camera type for the decades that followed.

Since a larger lens mount would be desirable, the Contax S adopted a screw mount of M42X1mm specification, which was to become the de facto industry standard.

When introduced in 1949, the Contax S was not marked as such, only "Contax", but increasing pressure from the new Zeiss Ikon company in Stuttgart induced Zeiss Ikon in Dresden to progressively abandon the use of the established trademark and names. The following model, known as "Contax D", first appeared with a little "D" marked under the Zeiss Ikon logo to signify its source as Dresden, but that was not good enough: in some markets it was sold as "Pentacon", a name contrived from "Pentaprism" and "Contax". Subsequent models were also made wearing both Contax and Pentacon nameplates, the former were meant for markets where Zeiss Ikon Dresden still held the rights to its name. Eventually, the company abandoned its original identity, and was merged with KW. In all, 22 Contax/Pentacon models were built in Dresden.

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