>>3721984I can only tell you about the Biogon 35/2 and it's a nice, sharp and well corrected lens.
Here's an example on Portra 160.
>>3721989I want that lens and several times a year I consider buying it. The facts that it weights so much more than other, marginally slower lenses and that it is just huge, keep me from getting it. Even v3 is bulky and I bet it covers quite a lot of the viewfinder.
I'd probably use it more as an f/1.4 and then, the only pro is that it's better corrected than the Nokton 35/1.4. It's clear disadvantage is its weight.
Also, I'm starting to understand uncle Ken on his point about filters. It already bothers me that I have to take along two sets of filters when I shoot the 21/35/90 combo cause of the Biogon. Adding the Nokton 35/1.2 would mean adding more bulk.