Wider than 28mm prewar Zeiss lenses?

[Tom A]

A couple of days ago I came upon a thread that linked to an excellent write up and schematics for pre war wide and ultra wide Zeiss lenses from the 30's and 40's.
Of course, I forgot to "favorite" it and now I kind find it! Does anyone know what the hell I am talking about. I think one of the lenses was the Spheregon(?).
Thanks in advance
Tom

 

[FrozenInTime]

Was it this Zeiss blog ?

"Did you know that the common suffix “gon” in Distagon, Biogon and Hologon means these are all lenses with a large angular view? “Gon” comes from the Greek word “gonia” for “angle.” Like many other manufacturers, Carl Zeiss uses a common end syllable to create consistent naming for its wide-angle lenses. One of the earliest examples of this approach is the famous “Hypergon” from Goerz which had a 130° angular view. That created lots of excitement at the beginning of the 20th century, as did the later three ZEISS lens types Distagon, Biogon and Hologon."

http://blogs.zeiss.com/photo/en/?p=1044

with a pdf link at the bottom http://blogs.zeiss.com/photo/en/wp-content/uploads/2011/12/en_CLB41_Nasse_LensNames_Distagon.pdf

 

[rxmd]

Was it this 2006 RFF thread by Frank Mechelhoff on the 19/f8 Sphaerogon, 25/f6.4 Perimetar and 16/f6.3 fisheye: http://rangefinderforum.com/forums/showthread.php?threadid=29320?

 

[sparrow6224]

Tom:
This might be the same as Mr. Freeze provides; interesting that this was published n Dec 2011. These papers from Zeiss are interesting I've read two others that now I cannot remember or find!

http://blogs.zeiss.com/photo/en/wp-content/uploads/2011/12/en_CLB41_Nasse_LensNames_Distagon.pdf

 

[sparrow6224]

Yes it is the same. I see now that RFF shortens the long urls.

 

[FrozenInTime]

Was it this 2006 RFF thread by Frank Mechelhoff on the 19/f8 Sphaerogon, 25/f6.4 Perimetar and 16/f6.3 fisheye: http://rangefinderforum.com/forums/showthread.php?threadid=29320?

There's a very promising link in that thread to http://www.marcocavina.com/articoli_fotografici/Perimetar_Sphaerogon_Pleon/00_pag.htm

And other interesting stuff on that site such as the Zeiss 50mm f/0.7 http://www.marcocavina.com/omaggio_a_kubrick.htm

 

[Tom A]

Thats the one I was looking for - the Marco Cavina set of drawings! Amaxing lenses.
Thanks to verybody - now I have to learn Italian to read the fine print. I mainly wanted it for the look of the optical designs.