lens mount manufactured by Cosina Voigtländer and marketed by Rollei Fototechnic. Flash units In 1967, Rollei started to sell flash units, but without much success as this market was already crowded with offerings from other manufacturers – not just other camera makers, but also consumer electronics companies such as Metz. The Rollei Strobomatic E66 costing 548 DM was the first electronic flash on the market, but not for long. The Strobofix, a similar model without a brightness control, sold for 357 DM. Rollei subsequently released many more variants. In 1968, Rollei introduced flash units for studio photography; there were three models (E250, E1250 and E5000), each with a different flash head. A special feature of Rollei's studio flash units was a modeling light – a halogen lamp integrated into the flash head. This helped the photographer to adjust the lighting and select the most appropriate aperture. Super 8 The advent of Super 8 film created a booming home movie market. This development had not gone unnoticed by Peesel, who decided that Rollei, too, should offer products for this new and expanding segment of the market. As Rollei lacked the resources in Braunschweig to develop or manufacture such products itself, it decided instead to resell (under the Rollei brand) products made by (a Bosch subsidiary in Germany) and (in Italy). Uelzen In the meanwhile, Rollei's product range had expanded considerably and it had outgrown the factory in Salzdahlumer Straße. Furthermore, recruiting new employees locally in the Braunschweig area had become increasingly difficult as around half of the local workforce was now employed by Volkswagen. Consequently, Peesel embarked on a search for a suitable location for a branch factory, preferably in an underdeveloped area within reach of Braunschweig. He selected Uelzen, a town some distant from Braunschweig; it was within 1 hours drive from Hamburg, Hannover, Braunschweig and Salzgitter, and well-situated on a branch of the Elbe Canal. What is more, as Uelzen lay within the economically depressed East–west border zone, Rollei would qualify for government subsidies. After purchasing a plot of land, Rollei began construction of new buildings that would provide ) of factory space, with plans for two future building projects. The first stage, completed in 1970, was used to manufacture slide projectors, studio flash systems and, later on, the Rolleimat Universal enlarger. However, the factory at Uelzen became redundant after Rollei transferred most of its production to Singapore. The