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Michael - interesting points. That would seem to be why practical use in a variety of shooting conditions is a better source of information, over time, than a handful of technical reviews based on test chart images at fixed distances.
When I did my 21mm lens shootout, I intentionally tested real-world scenes at infinity, far-normal distance, and near distances. It was interesting to see that a lens such as the CV21/1.8 didn't perform well at infinity wide open, but was equally as sharp, centrally at nearer distances, as the 21 Lux when both were at f/2, which is likely a more realistic use of these lenses at that aperture. Then there is a lens like the 21 SEM that is razor at all distances...
I think the 50 Lux ASPH is somewhat over-hyped. It's definitely a great lens, but at nearer distances it's not class leading in terms of sharpness/contrast/resolution. But does it need to be? IMO, Leica did the right thing by apparently optimizing it for far distances where photographers typically expect higher technical ability, especially if stopped down a bit. For example, my opinion is it's much better across the frame than the ZM50/2 at infinity at moderately wide apertures. Some SA at nearer distances of course can be complementary for portraiture...
Derek, I really like those. It reminds me a bit of what I have gotten out of the old 50/1.5 Summarit on the M9. On the NEX-7 it will probably look like mush though wide open. Might be worth trying the CV40/1.4 if you like the 35 Lux look but want to keep the price reasonable. I guess you can never have enough 35/40mm lenses, can you?
50/1 Nocti on NEX-7 - doesn't really show off the Nocti w/o character... but this lens surprised me somewhat by how 'normal' it can behave...