At the DC Fever: http://dcfever.com/news/readnews.php?id=5845
(in Chinese, English Translation Here)
All Interesting..
See also yet another brief field test report of the N-1:-
http://www.dcfever.com/news/readnews.php?id=5823
The IQ of this night scene picture seems to be not bad.
N.B. For large/original pictures, please visit the DC Fever pages above.
Related:-
A Virtual Lens Plant!
Leica Lenses Manufacturing Process