Hi, most of you here know that I have a long and mixed migration history of using Leica M mount lenses on SONY cameras (NEX-3, NEX-5N, NEX-6, NEX-A7, NEX-A7R2).
Taking this route can entail the danger of making many enemies, among SONY-fans and Leica-lovers ...
With new heavy-metal mirrorless cameras from Nikon, Canon, Panasonic and Sigma one could again try to find a "second home" for Leica lenses,
the new mounts promising better results than on the SONY A7s, where vignetting and color-shift could and had to be corrected using the
SONY lens correction app from Sony play memories. Weak corners one has to live with ...
Nikon Z looked promising to me, at first. They have vignetting correcting options for manual lenses, according to the manual.
However, here I find reasons to ignore Nikon Z for adapting Leica lenses:
https://blog.mingthein.com/2019/01/12/long-term-thoughts-on-the-nikon-z7-and-system/#more-17817
"It seems the sensor cover glass is thick enough to not play so nicely with non-telecentric wides: the edges of most M mount lenses under 35mm aren’t pretty, even known ‘good’ lenses for native M. "
So, this is it. - As good (or as bad) as the SONY A7s.
Canon I do not consider an attractive second body, because I would like to have IS.
One has to wait what Sigma offers, and Panasonic. Panasonic working closely with Leica might offer better support for M glass.
The Leica SL offers M support now, and it even has M lens profiles that can be selected. But it is big, and has no IS ...
Sorry for bothering you with my speculations on a rainy Sunday ...