That tree on the second photo came out Nicely Neil. I too have been contemplating moving away from my d850 kit to save same weight, perhaps to the Sony A7R IV w/ the 12-24 F2.8 GM and 70-200 F4 GM - but I'm somewhat afraid of moving away from my Zeiss 15mm F2.8 on the d850 which I know works, to either the 12-24, or 16-35 GM lenses. The bonus is that I wouldn't have to carry my 15, 24, and 70-200... eliminating a lens would be huge for weight savings, not to mention the DSLR to Mirrorless saves about 16 ounces off the top. That being said I'd expect to have to carry at least twice as many batteries, and another concern is the operation of the mirrorless in extreme cold like the Yukon, Iceland, or Norway, which I sometimes encounter.
Anyone have any thoughts or experience with that Sony vs the D850?