These are my tools that I normally carrying when I'm out photographing. Everything fits into my backpack, except my tripod and my drone.
Sony A7r3 with a L-bracket mounted.
Full frame mirroless camera. With 42,2 megapixel. It is light and take no place in my ryggsack. The only issue with a mirrorless system is that I have to clean the sensor quit often, though it´s exposed when changing lenses.
Sigma 24-70mm 2.8 DG DN Art
Canon EF 70-200mm f/4L IS USM
Canon EF 50mm f/1.8 STM
Formatt Hitech Firecrest ND 100x100mm
LEE´s landscape polariser.
Various ND filters for my drone
Metabones lense adapter from Canon EF to Sonys E-mount system.