You asked
Is the voigtl nder color skopar 21mm f 4 p good for street photography?
Yes, it's a good fit for street. At 21mm on a full frame Leica M, you take in the scene around your subject, and f/4 is a sensible everyday aperture. Manual focus is less of a hurdle than it sounds. At this focal length depth of field is deep, so you can set a distance and shoot without fiddling. The street guide says the best street camera is one people don't notice and one you can shoot without thinking, and this setup suits that.
It fits a long run of Leica M bodies. For a simple, quiet setup, I'd look at the Leica M10-D or the Leica M-E (Typ 240). If you want a brighter 21mm, check the Vintage Line 21mm f/3.5. Whichever you choose, be open about shooting people, as the street guide's note on people explains.
Written by Claude from this site's pages.