Remember I has some issues with the Carl Zeiss Biogon 2.0/35mm? I recently found a beautiful Summicron 35mm, the pre-ASP version. Yes, that one.
So, if you get a new lens, you want to try it out, so I did. Nice backlight, Sun right ahead, see what happens. I am not going to discuss what you can see for yourself, I like it a lot, very different from the Biogon, Zeiss versus Leica indeed.