Franke and Heidecke introduced the original Rolleiflex 6×6 TLR in January 1929, after eleven prototypes had been built between 1927 and 1928, and twelve pre-production models had been manufactured by the end of 1928. It was designed for 117 (B1) roll film and delivered six exposures per roll. The camera could be converted to accept 620 or 120 film, allowing 12 exposures. Unlike later models, the camera back was not hinged. Film advance was controlled by a rotary dial; there was no frame counter. Two lenses were available, both Zeiss Tessare lenses, with apertures of f/4.5 and f/3.8, respectively. The f/4.5 model was significantly cheaper and enjoyed greater popularity.
Technical data
- Production period: 1928–1932
- Model numbers: K1 611, K1 612 (removable back panel); K1 613 and K1 614 (hinged back panel)
- Taking lens (model 611 and 613): Zeiss Tessar 1:4.5/7.5 cm
- Taking lens (model 612 and 614): Zeiss Tessar 1:3.8/7.5 cm
- Viewfinder lens: Heidoscop 1:3.1/7.5 cm
- Shutter: F.Deckel-Compur, speeds from 1 to 1/300 second as well as B and T
- Serial numbers: External 1–199,999; internal up to approximately 35,000, which corresponds to the actual number of units
- Filter diameter: 28.5 mm (for clip-on)
This first model was later followed by the so-called “standard” version of the Rolleiflex.
