Originally Posted by Gabriel M.A.
Although I don't have my 35 f/2 Biogon anymore, I believe you will have some serious "vignetting" if you use a step-down ring on it; unless, of course, you're using an M8 or a m43 camera.
The filter thread of the Biogon is 43mm. I strongly advise getting the proper filter.
thanks for the reply.
damn .. this is what I thought too.
I also have 46mm filters for my C-sonnar so I could step up until I get the original hood.
Over the years I had so many different lenses and systems that I've collected at least a yellow or red filter in so many different sizes from rollei bay I to 67mm (Mamiya 43mm) - here comes another one