Upload & Sell: Off
I do own the Zeiss Jena Biotar 58mm f2 (1958 Exakta mount) as well as several Helios 44 (44-2, 44-M, 44-M-6) lenses.
Their look and Bokeh is remarkable similar, to the point that I can't keep them apart.
However, there is quit a bit of sample variation in Russian lenses. But these Helios-44 are cheap.....
I bought 4 before i found my perfect sample, most attached to a Zenith camera for a few Euros
All have the same look & Bokeh, but one is significant sharper wide open.
(I am using these lenses on a 5DmkII)