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Wollensak (en); ウォレンサック (ja) ウォーレンサック, ベリート, ヴェリート (ja)
English: Wollensak was an American manufacturer of audio-visual products. Wollensak began making camera lenses in 1902. The company also produced camera shutters for large format cameras. They made shutters such as the Betax, Alphax, Optimo and, for the Graflex Corporation, Rapax. At the height of their popularity in the 1950s and 1960s, many brands of movie cameras and their Fastax came with a Wollensak Velostigmat lens. Wollensak reel-to-reel tape recorders were prized for their robust construction and value.


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