You asked
Best travel lens for the leica m ev1?
For travel on the Leica M EV1, I'd start with the Leica Tri-Elmar-M 28-35-50mm f/4 ASPH. It's the closest thing the M range has to a travel zoom, covering 28mm to 50mm, which handles most of a day's shooting without changing lenses on a busy street.
For the second lens, I'd add a small fast prime for evenings and food, as the travel guide suggests. The Leica Summicron-M 35mm f/2 ASPH is a sensible choice. If you prefer wider, the Leica Summicron-M 28mm f/2 ASPH works well too.
The EV1 has no stabilisation in the body, so for dim interiors like churches, keep the shutter speed up or steady the camera on something solid.
Written by Claude from this site's pages.