The Rigid Summiron : different versions?

I have tried all different 50 summicrons...
There ALL wonderful !!

But my Favorite is a 1969 50 summicron, which i refer to as v3 😉
A hint more contrast, a tad modern, yummy good, mKes me Smile when I see the Results
 
I doubt if there is any version that everybody hates. In fact I doubt that there is any version that doesn't have someone somewhere loudly insisting it's the best. I think we are comparing levels of excellence here. All Summis are excellent; some are more excellent than others. One could also say "All Summis are horribly expensive; some are more horribly expensive than others." The CV line of lenses tends to show that both of these characteristics don't necessarily go together.

Cheers,
Dez
 
If chrome, the first version has a narrow focus ring like the chart on KR site. It is also bright chrome. Rigid and DR were the same.

Later versions of both were satin chrome with wide ribbed focus ring like the Rigid shown on K Rockwells site.

The first Rigid was also made in black paint. A friend has one.
 
It is quite confusing, but maybe there is nothing to dwell on since all rigid Summicrons are excellent lenses. So "Version II Rigid Summicron" may be the same as "Version III Summicron". There may exist some transition lenses, but if nobody has written on such a rare lens version, then we would not know either here.
 
.... there may exist some transition lenses, but if nobody has written on such a rare lens version, then we would not know either here.

As mentioned above by me and another poster, there is a rare version of the 6 element Summicron v3 ("rigid II"/11817) with "rigid I" (knurled) focusing mount. This is documented with pictures in Lager [1], and I seem to remember one being in the classifieds years ago.
 
Thank you, Roland. This is the version that some people have been talking about. Brian mentioned to me the changed distances between the elements.
 
Could anyone advise what type this one is?


Is it the same design as the Collapsible, or the '2nd' Summicron?
I couldn't find any reference for one like this.
11818 or ?
 
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