I'm thinking of buying a cheap, probably Russian, portrait lens. I've read good things about the Jupiter 8 50/2 and Helios 58/2. I'm looking for an m39 mount as that seems cheapest and smallest. But which lens should I get to complement my oly 45 1.8? Or is there some third option that would be better? I've heard great things about old Soviet glass and thought it might be fun to try. Thanks in advance for replies.