A History of the Xenon Lens

In the pantheon of fast Double-Gauss lenses from the 20th century, the Sonnar, Biotar, and Planar, are well known. But there’s also a lesser-known lens that is their equal; the Xenon. This lens was invented in 1925 by Dr. Albrecht Wilhelm Tronnier (1902-1982) while he was working for Jos. A. Schneider Optical Works in Bad … Continue reading A History of the Xenon Lens