This is a very interesting and useful discussion. I really appreciate all of your input. I see what you guys mean about the Nikkor's tendency to produce swirly backgrounds and to double lines. That is not an effect that I want! The really tight shots do seem to mitigate this effect. But I see how easily it shows up. And ideally, I would like to get a lens with very smooth bokeh.
What I'm looking for is a fast 50 for low light, mostly indoor, portraiture and other people photography. I have had in mind to get a fast 50 for some time. It has come into my head recently that now would be a good time to look for one as it would match up nicely with the M3 that I am also in the market for (RFF is a bad bad place 😀 ). All that said, am I looking at the right two lenses?[/QUOTE]
I have the Canon 50/1.4. I love it. Great lens. I also have the Nokton 50/1.5. I love it. Great lens. 😀 Ltm, too, IIRC.