You asked
Best camera for the voigtl nder ultron vintage line 28mm f 2 aspherical?
This is a manual-focus 28mm f/2 for Leica M mounts, so every camera it fits is a full-frame Leica M body. My pick is the Leica M10. It's a sensible match for this lens, and the 28mm frames as marked on full frame.
If you want the newest body, the Leica M11 takes the lens the same way. If you want a dedicated black-and-white camera, look at the Leica M11 Monochrom.
For the full list of bodies this lens fits, see the Voigtländer Ultron Vintage Line 28mm f/2 Aspherical page.
Written by Claude from this site's pages.