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Kodak Retina and Ektra Rangefinders This forum is for 35mm Kodak Retinas and Ektras rangefinders. The Retinas are known for their German engineering, relatively modest price and superb lenses. The Ektras are known as by far the finest 35mm American made rangefinder ever made.

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Are the Retina Xenar 50 3.5 and 50 2.8 lenses the same optical designs?
Old 05-19-2019   #1
Steve M.
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Are the Retina Xenar 50 3.5 and 50 2.8 lenses the same optical designs?

I'm trying to figure out if these are essentially the same lenses except for the wide open apertures, or if they're different optical designs. All I can find so far is that the 50 2.8 is a Tessar design of 4 elements in 3 groups. Nada on the 50 2.8. Any ideas? Not sure who the Retina guru is here, but if anyone would care to venture a guess, thanks!
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Old 05-20-2019   #2
JPD
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Yes, both Xenars are Tessar-type lenses with four elements in three groups.
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