Rapid-Omega Lens Designs Roundup

[mhv]

Curiosity got the better of me tonight, and I put together this little chart linking the four lenses of the Omega line with classic Zeiss designs, as well as relevant Mamiya lenses.

I'm not sure the 180mm is a Sonnar, but it looks a little bit like one. Otherwise, the designs are:

58mm: Biogon
90mm: Tessar
135mm: Planar

[JRG]

Interesting. Note that the 58mm and 60mm lenses, per the Owner's Manual, do not have the same number of elements. Perhaps you could expand your chart a bit, to inlcude both the 58mm and 60mm schematics?

http://www.rangefinderforum.com/forums/showthread.php?threadid=63826

[mhv]

Indeed, there's a slight difference with respect to the internal groups of the 60mm in comparison with the 58mm.

I will leave that as an exercise to the reader :D