Greetings from lockdown,
I just purchased a Zeiss zm 35mm Biogon-C F/2.8. Why? I don't know, I guess I wanted to try a Zeiss zm lens. I do also have a Summilux FLE, and a summicron V1 (Had a summicron ASPH, but never bonded with it).
Anyhow, I realized that this lens has 43mm filter threads and was wondering if anyone is using a step-up adapter to 46mm, and if so whether they get vignetting for 1-2 filters?
I would normally not hesitate to do this, but I ran into vignetting issues when stepping up from 39mm-46mm on a 50 APO lens (which was disappointing) and wasn't sure how well rangefinder lenses, in general and specific to this Zeiss lens, handle step-up adapters.