Steinheil was part of the Steinheil Söhne Optical and Astronomical Works based out of Munich, Germany. The company was founded in 1850 and initially was making astronomical telescopes for German observatories. The company shifted to making 33mm cameras and interchangeable lenses in the 1940s until the 1990s. Sell your Steinheil equipment on Gear Focus to get the most value for your items.