You asked
Best travel lens for the canon eos r6 mark ii?
For travel on the R6 Mark II, I'd start with one zoom that covers nearly everything. My pick is the Canon RF 24-105mm f/4L IS USM. It covers 24 to 105mm, is stabilised, and has the L-series build you want when you're on the road.
If you want something lighter and cheaper, the Canon RF 24-105mm f/4-7.1 IS STM covers the same range with a slower maximum aperture.
For evenings, food and dim interiors, add a small fast prime. The Canon RF 35mm f/1.8 Macro IS STM is a good companion to a zoom. That's the classic travel kit, as laid out in what to pack.
Written by Claude from this site's pages.