Archived posting to the Leica Users Group, 1997/07/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 04:13 PM 7/16/97 +0100, Joe Berenbaum wrote: >I'm curious; does this mean that only the original Leitz Anastimat was a >Tessar clone, or does this apply to other makers lenses that were also >called "Anastigmat"? Boy, I'm glad you asked that! Time for even more optical history! But I'll keep it to the Readers Digest version. Rudolph designed the symmetrical six-element Planar in 1896. It was a wonderful lens, but prone to flare in those pre-coating days. He and Wandersleb then designed the four-element Tessar to escape the flare while preserving most of the outstanding optical performance of the Planar. The original name for the Tessar was the 'Anastigmat'. From 1900 until 1917, the American agents for Zeiss were Bausch & Lomb, who manufactured Zeiss lenses in the US, hence the 'B&L Anastigmat'. Through some sloppiness, B&L managed to compromise the rights to the Anastigmat name in the US, though Zeiss successfully preserved it elsewhere. For instance, Zeiss insisted that Leitz call the original Leica lens an 'Anastigmat' to show its Zeiss connexions. Once the Tessar's patent expired in 1922, Leitz was free to call the lens anything they desired, so it became the Elmax, for 'Ernst Leitz Max', the last recognizing the rising star of Leitz lens design, Max Berek and, subsequently, the Elmar following a minor reworking. So, the long and short is that virtually all non-US lenses made prior to 1923 with the Anastigmat name are Tessars. Almost all US lenses follow this pattern. Kodak Anastigmat lenses of this era are Tessars as well, and royalties were paid, via B&L, to Carl Zeiss. The first camera on the upper reaches of Mount Everest was a VP Kodak carried by Somervell on the '22 and '24 climbs, disappearing with Mallory & Irving: this camera has a Zeiss-designed Kodak 'Anastigmat' lens. (So much for those Everest Johnny-come-latelies, E Leitz Wetzlar, with their 1982 Mount Everest M4-P's -- sixty years behind the times, guys! Even Rollei was on Everest a decade earlier, when the Dyrenfuerth International Climb used Rollei 35's as their climbing camera, an inspired choice. And Retina, of course, made it up with Hillary in the first ascent, this particular Prewar model sporting, of course, a Zeiss lens.) The Anastigmat name was fair game after 1922, and the Zeiss connexion ceases at that point. Zeiss was careful to trade-mark the Tessar name, and this has been proprietary ever since. Marc Marc James Small Cha Robh Bas Fir, Gun Ghras Fir! FAX: +540/343-7315