Alex S. , Jan 26, 2005; 01:03 p.m.
I've had a C/V 28/1.9 for 2 years and I'm fairly happy. Mechanically it is quite good. Optically it is very good in my view. Especially wide open it has than old pre-Aspherical Summicron feel--or "glow" if you wish. It is there because the aberations are not as well controlled as in the 'cron 28/2 ASPH. Certainly the latter is in every way the superior lens. But the C/V 28/1.9 is well made. The paint is rather weak (I'm talking about black). Mechanically it has not been problematic. It has the added virtue of have the Leica thread mount, which means you can use it with both LTM and M cameras. Optically, it is not as good chart-wise as the 'cron 28/2, particularly wide open, but becomes almost as good stopped down. For the money it is a very good deal. You may even like its visual effects more than the 'cron 28/2.