I am casually looking for a good 200 lens at a good price. I really like underrated stuff. The 200/4 is not considered great and the K200/2.5 is far too expensive (and rare) for me to contemplate.
I see that ebay occasionally has Carl Zeiss Jena Sonnar 180/2.5 (both the old zebra and the newer version) and a few Carl Zeiss Jena Sonnar 200/2.8. Has anybody got any experience with these lenses? They are old implementations (I don't think I can get a K-mount specimen) of even older designs (Olympia, 1936, I believe). Do these still hold their own? Eg, is there a point shooting these at full aperture, or does on just bare the weight of the 2.8 glass for a lens useful from (say) 5.6 onwards? Asking before I get involved in an overseas ebay transaction for a bad lens, Kostas
