The Sony camera behaves strangely in the presence of blue light.
It seems to introduce a high-contrast tonescale adjustment that
may appear more contrasty but also may give unnatural and difficult-to-predict
results.
What about the Canon5D Mark IV versus the older Canon 5Ds?
... using the same lens; that's why the subject matter changed a little bit;
Reid and I (Steve) did one camera first, and then the other, using the
same lens for both cameras.