I am taking a trip to Japan. 10 days with visits to Hiroshima, Tokyo etc. it s tour group, (not a photo group) I am taking my R3, my 24-105 f4, my 16mm f2.8, and my 8-15mm fisheye. So wide is pretty well covered.
For a long lens I have the following and will only take one:
100-400 RF...