Exakta Zweiverschluss Duplex (1010, 6.5x9, f2.9)

The Zweiverschluss Duplex (1010, 6.5x9, f2.9) represents an early, transitional attempt by Exakta to enter the emerging 35mm market. Produced between 1928 and 1939 alongside their more successful 127 roll film models, this camera utilized the standard 135 film cassette but featured a relatively unusual 6.5x9 cm image format on 35mm film, yielding rectangular negatives smaller than the standard 24x36mm Leica frames. Its key identifier is the "Zweiverschluss" or "double shutter" system, likely employing both a focal plane shutter and a separate lens shutter mechanism, potentially offering unique exposure control options. While it shares Exakta's characteristic robust build quality and craftsmanship typical of their era, the Duplex (1010) was ultimately overshadowed by the widespread adoption of the 24x36mm format and remained a less common production model compared to their mainstays.

The camera occupies a niche position in Exakta's history and the broader development of 35mm photography. It serves as an example of the experimentation that characterized the industry during the 1930s as manufacturers grappled with standardizing the 35mm format. Its significance lies primarily in its existence as a tangible piece of Exakta's early exploration of miniature film, alongside their more influential 127 line, rather than in introducing any revolutionary technology or achieving widespread market success. It appeals to collectors for its relative rarity and representation of Exakta's early 35mm endeavors.