You asked
Best portrait lens for the canon eos r8 mark ii?
For portraits on the R8 Mark II, I'd start with an 85mm. The body is full frame, so an 85mm frames as marked and gives you that flattering, slightly compressed look. My top pick is the Canon RF 85mm f/1.4L VCM. It's sharp wide open and the focus is quick enough for people who won't stay still.
If you want something lighter, the Canon RF 85mm f/2 Macro IS STM has in-lens stabilisation and is easy to carry all day. For the widest background blur, the Canon RF 85mm f/1.2L USM is the one to chase.
Whichever you pick, remember that light beats gear. A window and a little care with where your subject stands will do more than any lens.
Written by Claude from this site's pages.