Hello,
I bought an Heliar 1933/4 150mm in a Compur shutter and Bergheil bayonet. It is seems foggy and dirty in the internal part of the rear lens. Performance is not consistent with another 1950's Heliar I had.
Maybe cleaning it would make things better. I have little experience (Trioplan, Eurynar), and I am a bit wary. What am I to expect, if I remove the rear part? Would you advise trying it?
Thanks for helping