You asked
Is the voigtl nder ultron vintage line 35mm f 2 aspherical good for street photography?
Yes, I think it's a good street lens. A 35mm f/2 is a classic street focal length: wide enough to show the scene around your subject, and close enough that you don't need to stand in people's faces. The Voigtländer Ultron Vintage Line 35mm f/2 Aspherical is manual focus only, so you'll be setting focus yourself. That takes a little practice, but it suits street photography, which rewards a setup you can use without thinking.
It fits only Leica M bodies, and all of them are full frame. Three I'd look at:
Whichever you choose, check the street page's note on people before you start shooting.
Written by Claude from this site's pages.