Friedrich Deckel
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Friedrich Deckel GmbH, also known as F. Deckel, was a German company founded by Friedrich Deckel and Christian Bruns in Munich as Bruns & Deckel in 1903. Its most famous product is the Compur line of
Clockwork mechanism within a Compur-Rapid leaf shutter; cocking lever at upper left and tripping lever at upper right; lever below cocking lever selects aperture.
Early Compur shutters used a dial at the 12 o'clock position to set the shutter speed; later versions used a ring coaxial with the lens.
Voigtländer Ultramatic and dismounted lens
Voigtländer Super-Dynarex 135 mm f/4 lens, showing DKL-mount bayonet lugs
Rodenstock Photo Optics
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Rodenstock Photo Optics traces its origins to a mechanical workshop founded in 1877 by Josef Rodenstock and his brother Michael in Würzburg, Germany. The company relocated to Munich by 1884 and became
Rodenstock lenses for large-format cameras; L–R: Grandagon-N 115 mm f/6.8, Apo-Sironar-S 210 mm f/5.6, Grandagon-N 90 mm f/4.5
Kodak Retina IIC with Rodenstock Retina-Heligon lens